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1.
JAMA Netw Open ; 4(11): e2129697, 2021 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-34726748

RESUMEN

Importance: The use of magnetic resonance imaging (MRI) in pretreatment planning of ductal carcinoma in situ (DCIS) remains controversial. Understanding changes in short-term health-related quality of life associated with breast MRI would allow for a more complete comparative effectiveness assessment. Objective: To assess whether there are changes in patient-reported quality of life associated with breast MRI among women diagnosed with DCIS. Design, Setting, and Participants: This cohort study was a substudy of a nonrandomized clinical trial conducted at 75 participating US institutions from March 2015 to April 2016. Women recently diagnosed with unilateral DCIS who were eligible for wide local excision and had a diagnostic mammogram within 3 months of study registration were included. A total of 355 women met the eligibility criteria and underwent the study MRI. Data analysis was performed from June 3, 2020, to July 1, 2021. Exposures: Participants underwent bilateral breast MRI within 30 days of study registration and before surgery. Information on patient-reported testing burden for breast MRI was collected after MRI and before surgery. Main Outcomes and Measures: The primary outcome of this substudy was the patient-reported testing burden of breast MRI, measured by the Testing Morbidities Index (TMI) summated scale score. The TMI is a 7-item instrument that evaluates the temporary changes in quality of life associated with imaging before, during, and after the test (0 represents the worst possible, 100 the hypothetical ideal test experience). Results: Of the 355 women who met the eligibility criteria, 244 (69%) completed both questionnaires and were included in this analysis. The median age was 59 years (range, 34-85 years). The mean MRI TMI summated scale score was 85.9 (95% CI, 84.6-87.3). Of the 244 women, 142 (58%) experienced at least some fear and anxiety before the examination, and 120 women (49%) experienced fear and anxiety during the examination. A total of 156 women (64%) experienced pain or discomfort during the examination. In multivariable analyses, greater test-related burden was associated with higher levels of cancer worry (regression coefficient, -2.75; SE, 0.94; P = .004). Conclusions and Relevance: In this cohort study, a clinically meaningful breast MRI testing burden among women with DCIS was revealed that was significantly associated with cancer worry. Understanding the potential quality-of-life reduction associated with MRI, especially when used in combination with mammography, may allow development of targeted interventions to improve the patient experience.


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Carcinoma Ductal de Mama/diagnóstico por imagen , Carcinoma Intraductal no Infiltrante/diagnóstico por imagen , Imagen por Resonancia Magnética/psicología , Calidad de Vida/psicología , Adulto , Anciano , Anciano de 80 o más Años , Ansiedad/psicología , Neoplasias de la Mama/patología , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/patología , Carcinoma Ductal de Mama/psicología , Carcinoma Intraductal no Infiltrante/patología , Carcinoma Intraductal no Infiltrante/psicología , Ensayos Clínicos como Asunto , Miedo/psicología , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Persona de Mediana Edad
2.
J Surg Oncol ; 123(5): 1206-1214, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33577715

RESUMEN

PURPOSE: To evaluate the acceptability and impact of 3D-printed breast models (3D-BMs) on treatment-related decisional conflict (DC) of breast cancer patients. METHODS: Patients with breast cancer were accrued in a prospective institutional review board-approved trial. All patients underwent contrast-enhanced breast magnetic resonance imaging (MRI). A personalized 3D-BM was derived from MRI. DC was evaluated pre- and post-3D-BM review. 3D-BM acceptability was assessed post-3D-BM review. RESULTS: DC surveys before and after 3D-BM review and 3D-BM acceptability surveys were completed by 25 patients. 3D-BM were generated in two patients with bilateral breast cancer. The mean patient age was 48.8 years (28-72). The tumor stage was Tis (7), 1 (8), 2 (8), and 3 (4). The nodal staging was 0 (19), 1 (7), and 3 (1). Tumors were unifocal (15), multifocal (8), or multicentric (4). Patients underwent mastectomy (13) and segmental mastectomy (14) with (20) or without (7) oncoplastic intervention. Neoadjuvant therapy was given to seven patients. Patients rated the acceptability of the 3D-BM as good/excellent in understanding their condition (24/24), understanding disease size (25/25), 3D-BM detail (22/25), understanding their surgical options (24/25), encouraging to ask questions (23/25), 3D-BM size (24/25), and impartial to surgical options (17/24). There was a significant reduction in the overall DC post-3D-BM review, indicating patients became more assured of their treatment choice (p = 0.002). Reduction post-3D-BM review was also observed in the uncertainty (p = 0.012), feeling informed about options (p = 0.005), clarity about values (p = 0.032), and effective (p = 0.002) Decisional Conflict Scale subscales. CONCLUSIONS: 3D-BMs are an acceptable tool to decrease DC in breast cancer patients.


Asunto(s)
Neoplasias de la Mama/cirugía , Técnicas de Apoyo para la Decisión , Conocimientos, Actitudes y Práctica en Salud , Imagen por Resonancia Magnética/métodos , Mastectomía/estadística & datos numéricos , Participación del Paciente , Impresión Tridimensional/instrumentación , Adulto , Anciano , Neoplasias de la Mama/patología , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/patología , Carcinoma Ductal de Mama/psicología , Carcinoma Ductal de Mama/cirugía , Carcinoma Intraductal no Infiltrante/patología , Carcinoma Intraductal no Infiltrante/psicología , Carcinoma Intraductal no Infiltrante/cirugía , Carcinoma Lobular/patología , Carcinoma Lobular/psicología , Carcinoma Lobular/cirugía , Estudios de Factibilidad , Femenino , Estudios de Seguimiento , Humanos , Mastectomía/psicología , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos
3.
Eur J Cancer ; 144: 269-280, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33373871

RESUMEN

INTRODUCTION: Older patients with early breast cancer (EBC) derive modest survival benefit from chemotherapy but have increased toxicity risk. Data on the impact of chemotherapy for EBC on quality of life in older patients are limited, but this is a key determinant of treatment acceptance. We aimed to investigate its effect on quality of life in older patients enrolled in the Bridging the Age Gap study. MATERIALS AND METHODS: A prospective, multicentre, observational study of EBC patients ≥70 years old was conducted in 2013-2018 at 56 UK hospitals. Demographics, patient, tumour characteristics, treatments and adverse events were recorded. Quality of life was assessed using the European Organisation for Research and Treatment of Cancer Quality-of-Life Questionnaires (EORTC-QLQ) C30, BR23 and ELD 15 plus the Euroqol-5D (eq-5d) over 24 months and analysed at each time point using baseline adjusted linear regression analysis and propensity score-matching. RESULTS: Three thousand and four hundred sixteen patients were enrolled in the study; 1520 patients undergoing surgery and who had high-risk EBC were included in this analysis. 376/1520 (24.7%) received chemotherapy. At 6 months, chemotherapy had a significant negative impact in several EORTC-QLQ-C30 domains, including global health score, physical, role, social functioning, cognition, fatigue, nausea/vomiting, dyspnoea, appetite loss, diarrhoea and constipation. Similar trends were documented on other scales (EORTC-QLQ-BR23, EORTC-QLQ-ELD15 and EQ-5D-5L). Its impact was no longer significant at 18-24 months in unmatched and matched cohorts. CONCLUSIONS: The negative impact of chemotherapy on quality-of-life is clinically and statistically significant at 6 months but resolves by 18 months, which is crucial to inform decision-making for older patients contemplating chemotherapy. TRIAL REGISTRATION NUMBER ISRCTN: 46099296.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Carcinoma Lobular/psicología , Calidad de Vida , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/patología , Carcinoma Lobular/tratamiento farmacológico , Carcinoma Lobular/patología , Femenino , Estudios de Seguimiento , Humanos , Pronóstico , Estudios Prospectivos , Encuestas y Cuestionarios
4.
BMC Cancer ; 20(1): 1098, 2020 Nov 12.
Artículo en Inglés | MEDLINE | ID: mdl-33183247

RESUMEN

BACKGROUND: Follow-up after curative surgery is increasingly recognized as an important component of breast cancer care. Although current guideline regulates the follow-ups, there are no relevant studies on the adherence to it in China. This study investigated the post-surgery follow-up and explored its association with patients, tumor and treatment characteristics. METHODS: A total of 711 patients underwent surgical treatment in Shanxi Bethune Hospital from March 2012 to May 2018 were included in this study. Baseline sociodemographic, tumor, and treatment characteristics were obtained from the hospital electronic medical records. The post-surgery follow-up was reviewed and assessed from the patient's follow-up examination record. Factors associated with the first three-year follow up was evaluated using logistic regression analysis. RESULTS: The annual follow-up rate after surgery decreased gradually from 67.1% at the 1st year, 60.2% at the 3rd year to 51.9% at the 4th year, and 43.5% at the 5th year. Loss of follow-up during the first 3 years after surgery was significantly associated with older age (> 65 years), lower medical insurance coverage, axillary lymph node dissection, and less intensity of systemic treatment. CONCLUSION: A significant downtrend of annual follow-up rate for breast cancer survivors was confirmed in this study. Loss of follow-up within the first 3 years after surgery was associated with both patient's characteristics and treatment. These results will provide evidence to help clinicians to develop tailored patient management after curative surgery.


Asunto(s)
Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Carcinoma Lobular/psicología , Cobertura del Seguro , Mastectomía/métodos , Cooperación del Paciente/psicología , Factores Socioeconómicos , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/patología , Neoplasias de la Mama/cirugía , Carcinoma Ductal de Mama/patología , Carcinoma Ductal de Mama/cirugía , Carcinoma Lobular/patología , Carcinoma Lobular/cirugía , Femenino , Estudios de Seguimiento , Humanos , Escisión del Ganglio Linfático/métodos , Persona de Mediana Edad , Cooperación del Paciente/estadística & datos numéricos , Periodo Posoperatorio , Pronóstico , Adulto Joven
5.
Biomedica ; 40(2): 349-361, 2020 06 15.
Artículo en Inglés, Español | MEDLINE | ID: mdl-32673462

RESUMEN

Introduction: Breast cancer is a serious neoplasm that originates in mammary tissues whose treatment with chemotherapy seems to generate significant changes in the quality of life. Objective: To determine the risk factors associated with health-related quality of life in women with breast cancer under chemotherapy in Cali, Colombia. Materials and methods: We conducted an observational, cross-sectional study with analytical components in a sample of 80 female patients using the QLQ-C30 questionnaire for cancer, and the QLQ-BR23 for breast cancer, as well as sociodemographic and clinical information. We performed a logistic regression analysis to determine associated risk factors through adjusted OR and 95% CI; the quality of life was classified using the QLQ-BR23. Results: The most relevant symptoms were fatigue, insomnia, and hair loss. Physical functionality, feelings of pleasure, and sexual activity were reduced. The factors associated with low quality of life were mammary symptoms (adjusted OR= 5.5; 95% CI: 1.2-24.8; p = 0.038), systemic therapy side effects (adjusted OR = 7.3; IC95%: 2.6-22.1; p = 0.012), lower sexual pleasure (adjusted OR = 1.8; IC95%: 1.2-11.8; p = 0.027) and reduction of expectations about the future (adjusted OR = 4.2; IC95%: 1.1-17.8; p = 0.045). Conclusions: The quality of life in women with breast cancer and under chemotherapy was mainly affected by the side effects of the therapy; the most relevant signs and symptoms identified were hair loss, insomnia, and fatigue besides breast symptoms, lower physical functionality, and decreased sensation of sexual pleasure. We recommend intervention strategies aimed at improving the quality of life and the physical and emotional care of these patients.


Introducción. El cáncer de mama es una neoplasia grave que se origina en los tejidos mamarios y cuyo tratamiento demanda quimioterapia, con los consecuentes cambios en la calidad de vida. Objetivo. Determinar los factores de riesgo asociados con la calidad de vida relacionada con la salud en mujeres con cáncer de mama sometidas a quimioterapia en Cali, Colombia. Materiales y métodos. Se hizo un estudio observacional y transversal con componente analítico en una muestra de 80 mujeres, utilizando los cuestionarios QLQ-C30 para cáncer y QLQ-BR23 para cáncer de mama, así como información sociodemográfica y clínica. Se hizo un análisis de regresión logística para determinar los factores asociados con las razones de momios (odd ratios, OR) ajustadas y un intervalo de confianza (IC) de 95 %; la calidad de vida se clasificó mediante el cuestionario QLQ-BR23. Resultados. Los síntomas más relevantes fueron fatiga, insomnio y pérdida de cabello. Se redujeron la funcionalidad física, las sensaciones de placer y la actividad sexual. Los factores asociados con la baja calidad de vida fueron los síntomas mamarios (OR ajustada=5,5; IC95% 1,2-24,8; p=0,038), los efectos secundarios del tratamiento sistémico (OR ajustada=7,3; IC95% 2,6-22,1; p=0,012), un menor placer sexual (OR ajustada=1,8; IC95% 1,2-11,8; p=0,027) y la reducción de expectativas para el futuro (OR ajustada=4,2; IC95% 1,1-17,8; p=0,045). Conclusiones. En las mujeres con cáncer de mama sometidas a quimioterapia, la calidad de vida se vio afectada principalmente por los efectos secundarios del tratamiento, en tanto que los signos y los síntomas más relevantes fueron la pérdida del cabello, el insomnio y la fatiga, además de los síntomas mamarios, la menor funcionalidad física y la menor sensación de placer sexual. Se recomienda la implementación de estrategias de intervención destinadas a mejorar la calidad de vida, y el cuidado físico y emocional de las pacientes.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/psicología , Calidad de Vida , Adulto , Alopecia/inducido químicamente , Alopecia/psicología , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias de la Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/psicología , Colombia , Intervalos de Confianza , Estudios Transversales , Fatiga/inducido químicamente , Fatiga/psicología , Femenino , Esperanza , Humanos , Libido/efectos de los fármacos , Modelos Logísticos , Persona de Mediana Edad , Oportunidad Relativa , Factores de Riesgo , Trastornos del Inicio y del Mantenimiento del Sueño/inducido químicamente , Trastornos del Inicio y del Mantenimiento del Sueño/psicología , Factores Socioeconómicos , Encuestas y Cuestionarios
6.
Breast Cancer Res Treat ; 182(1): 159-168, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32385793

RESUMEN

PURPOSE: To determine the intermediate-term impact of diagnosis and treatment of ductal carcinoma in situ of the breast (DCIS) on health services utilization, we compared utilization by cases of DCIS to unaffected controls. METHODS: We identified a population-based cohort of Ontario females diagnosed with DCIS between 2010 and 2015. We matched 5 controls without any history of cancer to each case, on the date of diagnosis of the case (the index date), by age, annual mammography history, socioeconomic status, and comorbidity. We identified billing claims and hospital records, during the interval 13 to 60 months prior to, and subsequent to the index date, and computed rates per 100 person-years during both intervals, to conduct a difference-in-differences analysis. We used negative binomial regression to test if the change in rates in health services differed between cases and controls. RESULTS: Visits with a breast diagnosis code, and claims for breast surgery and imaging, were significantly increased among cases compared to controls (all p values < 0.0001) after DCIS;however, there was no increase in visits for anxiety or depression (RR 1.13 (95% CI 0.97, 1.32, p = 0.11), visits to psychiatrists (RR 1.07 (95% CI 0.82, 1.40) p = 0.6), or hospital procedures other than breast surgery (RR 1.10 (95% CI 0.88, 1.37) p = 0.4). CONCLUSIONS: DCIS is associated with more visits and procedures related to the breast compared to controls following diagnosis and treatment, but other health services utilization and visits related to anxiety and depression were not increased.


Asunto(s)
Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/patología , Carcinoma Intraductal no Infiltrante/patología , Utilización de Instalaciones y Servicios/estadística & datos numéricos , Aceptación de la Atención de Salud/psicología , Anciano , Neoplasias de la Mama/psicología , Neoplasias de la Mama/terapia , Carcinoma Ductal de Mama/psicología , Carcinoma Ductal de Mama/terapia , Carcinoma Intraductal no Infiltrante/psicología , Carcinoma Intraductal no Infiltrante/terapia , Estudios de Casos y Controles , Femenino , Estudios de Seguimiento , Humanos , Mamografía , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos
7.
Support Care Cancer ; 28(5): 2247-2254, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-31451944

RESUMEN

PURPOSE: Despite having an excellent prognosis, patients with ductal carcinoma in situ (DCIS) report significant anxiety and depression following diagnosis. This study evaluated psychological morbidity using the Edmonton Symptom Assessment Scale (ESAS) in patients with DCIS compared with women with early-stage invasive breast cancer (EIBC) receiving radiotherapy (RT). METHODS: We identified patients diagnosed with DCIS or EIBC (stage I or II breast cancer) from 2011 to 2017 who had at least one ESAS completed pre- and post-RT. Data on systemic treatment, radiation, patient demographics, and disease stage were extracted from existing databases. Psychological morbidity was evaluated through measurement of depression, anxiety, and overall wellbeing within the ESAS. The Wilcoxon rank-sum test or chi-square test was performed for continuous or categorical variables. RESULTS: This study included 137 women with DCIS and 963 women with EIBC. ESAS was completed on average 28 days before RT (baseline) and 142 days after RT. Baseline ESAS scores showed significantly higher rates of depression among women with EIBC compared with those with DCIS (p = 0.006). Patients with EIBC also reported higher levels of anxiety and lower overall wellbeing than patients with DCIS, but this difference was not statistically significant. Post-RT ESAS scores showed significantly higher anxiety in patients with EIBC compared with DCIS (p = 0.049). Post-RT measures of anxiety and overall wellbeing were higher in patients with EIBC but differences were not statistically significant. CONCLUSION: Women with DCIS experience relatively less psychological morbidity than women with EIBC, pre- and post-RT.


Asunto(s)
Ansiedad/etiología , Neoplasias de la Mama/psicología , Neoplasias de la Mama/radioterapia , Carcinoma Ductal de Mama/psicología , Carcinoma Intraductal no Infiltrante/psicología , Depresión/etiología , Adulto , Anciano , Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/patología , Femenino , Humanos , Persona de Mediana Edad , Estadificación de Neoplasias , Pronóstico , Psicometría/métodos , Estudios Retrospectivos , Evaluación de Síntomas/métodos
8.
Int J Radiat Oncol Biol Phys ; 103(2): 374-380, 2019 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-30612961

RESUMEN

PURPOSE: To evaluate the feasibility and toxicity of a single-fraction 8-Gy stereotactic boost after whole-breast irradiation in early breast cancer. The primary aim of this phase 2 study was to evaluate cutaneous breast toxicity using National Cancer Institute Common Terminology Criteria for Adverse Events (version 4) 3 months after the boost. Secondary objectives were local control, survival, and patient-reported quality of life using the European Organisation for Research and Treatment of Cancer QLQ-C30 and breast-specific European Organisation for Research and Treatment of Cancer QLQ-BR 23 questionnaires. METHODS AND MATERIALS: Patients with invasive ductal or lobular pT1-2 breast cancer treated with lumpectomy with clear margins and pN0 were included. Patients requiring chemotherapy were excluded. RESULTS: Twenty-eight eligible patients received the planned boost, and 26 had hormonal therapy. The procedure was technically successful without procedural complications. A median of 3 fiducials were tracked, and 115 beams were used. There were 22 acute grade 1 breast skin toxicities, including fibrosis, pain, erythema, or pigmentation. There were 2 acute grade 2 erythemas. Median skin boost dose was inversely correlated with acute skin toxicity (P = .028). QLQ-C30 scores revealed acute dyspnea and arm symptoms without correlation to the boost dose. Breast symptom QLQ-BR23 scores did not deteriorate, although upset with hair loss and systemic side effects of hormonal therapy were observed. After a median follow-up of 38 months, 1 patient had in-boost-field relapse, and there were 5 late grade 1 and 1 grade 2 skin toxicities. CONCLUSIONS: Single-fraction stereotactic boost after conventional whole-breast irradiation in early breast cancer is feasible with minor toxicities. Quality of life and specific breast items showed excellent patient acceptance.


Asunto(s)
Neoplasias de la Mama/radioterapia , Radiocirugia/métodos , Procedimientos Quirúrgicos Robotizados/métodos , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Carcinoma Ductal de Mama/radioterapia , Carcinoma Lobular/psicología , Carcinoma Lobular/radioterapia , Estudios de Factibilidad , Femenino , Fibrosis , Humanos , Mastectomía Segmentaria/métodos , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Estudios Prospectivos , Calidad de Vida , Índice de Severidad de la Enfermedad , Piel/efectos de la radiación , Encuestas y Cuestionarios , Tomografía Computarizada por Rayos X
9.
Clin Breast Cancer ; 19(1): e85-e100, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30473244

RESUMEN

INTRODUCTION: When evaluating a quality-of-life questionnaire (QLQ), many validation studies do not correlate quality-of-life scores with objective measurements of complications associated with treatment. PATIENTS AND METHODS: We performed a cross-sectional observational study with 300 patients submitted to breast-conserving therapy. The patients answered the European Organization for Research and Treatment of Cancer (EORTC) QLQs C-30 and BR23, as well as the Brazilian Portuguese version of the Breast Cancer Treatment Outcome Scale (BCTOS) questionnaire. Retest, internal consistency, factorial analysis, convergent/divergent analysis, and Rasch evaluation were performed. All patients underwent physical evaluations to assess lymphedema, handgrip strength, shoulder range of motion, breast cosmesis, and breast pain, and these groups were compared on the basis of BCTOS scores. Receiver operating characteristic curve determined the predictive value of BCTOS scores associated with clinical practice. RESULTS: The internal consistencies of the BCTOS domains ranged from 0.785 to 0.895. Factor analysis grouped according to the original questionnaire. Convergent validation showed differences in the sexual functioning and sexual enjoyment domains of the EORTC BR23. Analysis of known groups found that in most domains, the scores were higher in patients with lymphedema, strength deficit, shoulder range-of-motion alteration, poor breast cosmesis, breast pain, and axillary lymphadenectomy. Using a cutoff of 1.26, lymphedema was associated with the edema domain; using a cutoff of 1.33, Late Effects Normal Tissue Task Force/Subjective, Objective, Management, Analytic pain was associated with the pain domain; and using a cutoff of 2.37, the cosmetic domain was associated with subjective cosmesis. CONCLUSION: The association of objective measurements in a validation study of quality of life qualified the study and allowed us to develop better parameters for comparisons of results of breast-conserving therapy between populations.


Asunto(s)
Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Escisión del Ganglio Linfático/métodos , Mastectomía Segmentaria/métodos , Evaluación de Resultado en la Atención de Salud , Calidad de Vida , Adulto , Anciano , Anciano de 80 o más Años , Brasil , Neoplasias de la Mama/patología , Neoplasias de la Mama/cirugía , Carcinoma Ductal de Mama/patología , Carcinoma Ductal de Mama/cirugía , Estudios Transversales , Femenino , Estudios de Seguimiento , Fuerza de la Mano , Humanos , Persona de Mediana Edad , Portugal , Psicometría , Curva ROC , Encuestas y Cuestionarios , Resultado del Tratamiento
10.
Clinics (Sao Paulo) ; 73: e411, 2018 11 29.
Artículo en Inglés | MEDLINE | ID: mdl-30517281

RESUMEN

OBJECTIVE: To correlate the perceptions related to dietary intake with the domains and subscales of health-related quality of life (HRQL) in women with breast neoplasms receiving chemotherapy. METHODS: In this prospective study, 55 women with breast cancer were followed up during chemotherapy at three different times (T0, T1, T2). Before chemotherapy, perceptions related to food consumption were evaluated. HRQL was analyzed with the EORTC QLQ-C30 and Br23 instruments 21 days after each investigated cycle. The differences (T2-T0) in the subscales and HRQL domains were correlated with the differences (T2-T0) in the appetite scores. Spearman's correlation was used to verify a possible correlation between differences in functional and overall HRQL domains (T2-T0) and differences in appetite scores for certain foods and between the differences in some subscales of EORTC QLQ-C30 and Br23 (T2-T0) and differences in appetite scores for certain food groups (T2-T0). RESULTS: Correlations between pain and appetite for bitter taste and between an increased appetite for juices and pain intensification or fatigue were identified, and pain was correlated with an appetite for starchy foods. An appetite for vegetables, legumes and meat/eggs was correlated with physical function. The only significant correlation with social functions occurred between the appetite for sweet foods and these functions. We found a correlation between overall health, emotional function, social function and physical function and the appetite for juices. CONCLUSION: Chemotherapy alters the individual's relationship with food and, consequently, the individual's HRQL.


Asunto(s)
Antineoplásicos/efectos adversos , Neoplasias de la Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/tratamiento farmacológico , Carcinoma Lobular/tratamiento farmacológico , Preferencias Alimentarias/efectos de los fármacos , Calidad de Vida , Adulto , Anciano , Análisis de Varianza , Apetito/efectos de los fármacos , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Carcinoma Lobular/psicología , Femenino , Preferencias Alimentarias/psicología , Humanos , Persona de Mediana Edad , Percepción/efectos de los fármacos , Estudios Prospectivos , Calidad de Vida/psicología , Valores de Referencia , Estadísticas no Paramétricas , Factores de Tiempo
11.
Clin Breast Cancer ; 18(6): e1269-e1275, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30153977

RESUMEN

INTRODUCTION: The information needs of breast cancer patients at diagnosis have been studied extensively. However, with cancer survival improving, the era of cancer care has entered a more chronic phase with an associated paucity of data related to longer term information requirements. The aim of the present study was to assess and compare the information needs of breast cancer patients during the first 5 years after the diagnosis. PATIENTS AND METHODS: A total of 105 follow-up consecutive patients presenting to a tertiary referral breast cancer center from August to October 2017 were recruited. The patients were divided into groups by the years after the diagnosis (1, 3, and 5 years). Each patient completed the Toronto Information Needs Questionnaire for Breast Cancer. RESULTS: The number of patients in each group was as follows: 23 at 1 year, 38 at 3 years, and 44 at 5 years after the initial diagnosis. The median Toronto Information Needs Questionnaire for Breast Cancer score was 4.15 on a 5-point Likert scale of breast cancer information needs (1, not important to 5, extremely important). No difference was found in the median scores at 1, 3, and 5 years. Information pertaining to the disease process was rated as most important (median, 4.50), and information regarding the psychosocial aspect of disease was ranked lowest (median, 3.75). CONCLUSION: The information needs of patients with breast cancer remain high throughout the follow-up period after the diagnosis. In an era of prolonged survival, attention to the information needs of patients at follow-up examinations is as important as at the time of diagnosis and treatment.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Carcinoma Ductal de Mama/diagnóstico , Informática Médica/normas , Evaluación de Necesidades , Educación del Paciente como Asunto , Adulto , Anciano , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Pronóstico , Encuestas y Cuestionarios , Factores de Tiempo
12.
Breast ; 40: 97-105, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29730304

RESUMEN

BACKGROUND: Decision making about breast reconstruction (BR) following a diagnosis of breast cancer, Ductal Carcinoma in Situ (DCIS), or to reduce future breast cancer risk, is difficult and complex. This paper systematically reviews interventions aiming to support patients facing the option of BR, and assesses their effectiveness in improving a range of patient outcomes. METHODS: Ten databases were searched for articles published up to October 2017 that evaluated interventions to support patient decision making about BR within controlled trials. All included studies were assessed for methodological quality. Descriptive analyses of patient outcomes within included studies were performed. RESULTS: The search yielded 3291 articles. Eight studies met the inclusion criteria resulting in the evaluation of seven distinct interventions (n = 1212). Six studies were assessed to be of weak methodological quality, with one of moderate and one of strong quality. Three out of five interventions demonstrated a reduction in decisional conflict (ds = 0.26-0.69) and two out of three interventions resulted in reductions in decisional regret (ds = 0.27-3.69) at various time points. Treatment choice was altered in two of five studies. There were no changes in patient-reported anxiety levels, whilst the impact on depression was mixed. In all studies which reported on it, improvements in patient satisfaction and involvement in decision making were found. CONCLUSIONS: Few interventions are currently available. Whilst some findings are encouraging, improvements on patient outcomes are mixed. Further research should focus on the development and evaluation of effective interventions.


Asunto(s)
Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Toma de Decisiones , Técnicas de Apoyo para la Decisión , Mamoplastia/psicología , Satisfacción del Paciente , Neoplasias de la Mama/cirugía , Carcinoma in Situ/psicología , Carcinoma in Situ/cirugía , Carcinoma Ductal de Mama/cirugía , Femenino , Humanos , Persona de Mediana Edad
13.
Plast Reconstr Surg ; 141(1): 1-9, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-28922321

RESUMEN

BACKGROUND: The purpose of this study was to evaluate the self-reported aesthetic outcome of breast conservation therapy in a generalized sample of patients, and to describe potential barriers to referral for partial breast reconstruction. METHODS: Consecutive breast conservation therapy patients completing radiotherapy over a 1-year period at a regional cancer center were identified. Eligible patients were contacted by means of mail/e-mail and invited to participate. Participants completed the BREAST-Q breast conservation therapy module along with a questionnaire examining feelings about breast reconstruction. Multiple regression analysis was performed using the satisfaction with breasts scale as the dependent variable. RESULTS: Surveys were completed by 185 of 592 eligible participants (response rate, 31.3 percent; mean age, 61 years) an average of 38 months after lumpectomy. The mean score for the BREAST-Q satisfaction with breasts scale was 59 of 100. Younger age (p = 0.038), lumpectomy reexcision (p = 0.018), and lumpectomy at a nonacademic center (p = 0.026) were significantly associated with lower satisfaction. Bra size, months from lumpectomy, and tumor quadrant/size were not significantly associated with satisfaction (p > 0.05). The most common statements regarding reconstruction were "I don't feel the need for it" (60.0 percent), "I don't like the thought of having breast implants" (22.7 percent), and "I don't want any more surgeon/doctor visits" (22.2 percent). Before lumpectomy, only 1.6 percent had a consultation for reconstruction, and only 22.7 percent were aware of this option. If offered, 33.1 percent of patients would have attended this consultation. CONCLUSION: There is an unmet demand for partial breast reconstruction, with an opportunity to advocate and increase awareness on behalf of patients undergoing breast conservation therapy.


Asunto(s)
Mamoplastia/psicología , Mastectomía Segmentaria/psicología , Medición de Resultados Informados por el Paciente , Satisfacción del Paciente/estadística & datos numéricos , Derivación y Consulta , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/psicología , Neoplasias de la Mama/cirugía , Carcinoma Ductal de Mama/psicología , Carcinoma Ductal de Mama/cirugía , Carcinoma Intraductal no Infiltrante/psicología , Carcinoma Intraductal no Infiltrante/cirugía , Carcinoma Lobular/psicología , Carcinoma Lobular/cirugía , Estudios Transversales , Estética , Femenino , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Autoinforme , Adulto Joven
14.
Artículo en Inglés | MEDLINE | ID: mdl-28850754

RESUMEN

Memory is one of the crucial human cognitive functions, and deficits in memory processes may lead to difficulties in everyday functioning. The aim of this study was to analyse the effect of anthracycline-based adjuvant chemotherapy (AC) used in breast cancer treatment on verbal memory and learning. We also evaluated the relationship between verbal memory and psychological, somatic and socio-demographic factors. The study was carried out on a group of 31 women with early breast cancer treated with adjuvant chemotherapy and 30 healthy controls. The patients underwent neuropsychological assessment using the Rey Auditory Verbal Learning Test at three time points: before chemotherapy, mid-chemotherapy and post-chemotherapy. The examination in the controls was conducted at the same time intervals. We found an association between AC-schema chemotherapy and deficits in delayed memory. A deterioration in performance after treatment was observed in 19% of patients. The results showed no deterioration of immediate memory or the verbal learning process. Moreover, a positive relationship was shown between the level of education, physical fitness and the functioning of verbal memory. The results of the study also indicate that age and hormonal status are factors that may increase the possibility of deficits in verbal memory after AC-schema chemotherapy.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/tratamiento farmacológico , Memoria , Aprendizaje Verbal , Adulto , Factores de Edad , Neoplasias de la Mama/patología , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/patología , Carcinoma Ductal de Mama/psicología , Estudios de Casos y Controles , Quimioterapia Adyuvante , Ciclofosfamida/administración & dosificación , Doxorrubicina/administración & dosificación , Escolaridad , Femenino , Humanos , Persona de Mediana Edad , Pruebas Neuropsicológicas , Aptitud Física
15.
Clin Breast Cancer ; 18(2): e205-e218, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29050918

RESUMEN

INTRODUCTION: Contralateral prophylactic mastectomy (CPM) rates are rising, with fear implicated as a contributing factor. This study used a contralateral breast cancer (CBC) risk stratification tool to assess whether the selection of CPM is reflective of future CBC risk. PATIENTS AND METHODS: This retrospective study evaluated 404 women with unilateral breast cancer treated with breast conservation, unilateral mastectomy, or bilateral mastectomy within a single multidisciplinary clinic. Women were evaluated by the Manchester risk tool to calculate lifetime CBC risk. Logistic regression analysis was used to evaluate whether CBC risk was associated with CPM, and the clinical rationale for prophylactic mastectomy justification was recorded. RESULTS: Sixty-two percent underwent breast conservation, 18% unilateral mastectomy, and 20% bilateral mastectomy. In the CPM cohort, 36% had > 20% calculated lifetime CBC risk. In the invasive cohort, younger age (odds ratio 2.65, P < .0001) and genetic mutation positivity (odds ratio 35.39, P = .019) independently predicted CPM. Other contributing factors included benign contralateral breast findings (29%) and recommendations against breast conservation due to disease burden (28%). Six percent selected CPM as a result of an unsubstantiated fear regarding breast cancer. CONCLUSION: The majority of women (63%) who selected CPM had < 20% CBC risk. In these lower-risk women selecting CPM, factors increasing reasonable fear dominated surgical choice (81% of this subset).


Asunto(s)
Carcinoma Ductal de Mama/cirugía , Carcinoma Intraductal no Infiltrante/cirugía , Miedo/psicología , Neoplasias Primarias Secundarias/prevención & control , Mastectomía Profiláctica/estadística & datos numéricos , Neoplasias de Mama Unilaterales/cirugía , Adulto , Factores de Edad , Anciano , Biopsia , Mama/patología , Mama/cirugía , Carcinoma Ductal de Mama/psicología , Carcinoma Intraductal no Infiltrante/psicología , Femenino , Humanos , Mastectomía Segmentaria/estadística & datos numéricos , Persona de Mediana Edad , Neoplasias Primarias Secundarias/psicología , Mastectomía Profiláctica/psicología , Estudios Retrospectivos , Medición de Riesgo , Neoplasias de Mama Unilaterales/psicología
16.
Clinics ; 73: e411, 2018. tab
Artículo en Inglés | LILACS | ID: biblio-974928

RESUMEN

OBJECTIVE: To correlate the perceptions related to dietary intake with the domains and subscales of health-related quality of life (HRQL) in women with breast neoplasms receiving chemotherapy. METHODS: In this prospective study, 55 women with breast cancer were followed up during chemotherapy at three different times (T0, T1, T2). Before chemotherapy, perceptions related to food consumption were evaluated. HRQL was analyzed with the EORTC QLQ-C30 and Br23 instruments 21 days after each investigated cycle. The differences (T2-T0) in the subscales and HRQL domains were correlated with the differences (T2-T0) in the appetite scores. Spearman's correlation was used to verify a possible correlation between differences in functional and overall HRQL domains (T2-T0) and differences in appetite scores for certain foods and between the differences in some subscales of EORTC QLQ-C30 and Br23 (T2-T0) and differences in appetite scores for certain food groups (T2-T0). RESULTS: Correlations between pain and appetite for bitter taste and between an increased appetite for juices and pain intensification or fatigue were identified, and pain was correlated with an appetite for starchy foods. An appetite for vegetables, legumes and meat/eggs was correlated with physical function. The only significant correlation with social functions occurred between the appetite for sweet foods and these functions. We found a correlation between overall health, emotional function, social function and physical function and the appetite for juices. CONCLUSION: Chemotherapy alters the individual's relationship with food and, consequently, the individual's HRQL.


Asunto(s)
Humanos , Femenino , Adulto , Persona de Mediana Edad , Anciano , Calidad de Vida/psicología , Neoplasias de la Mama/tratamiento farmacológico , Carcinoma Lobular/tratamiento farmacológico , Carcinoma Ductal de Mama/tratamiento farmacológico , Preferencias Alimentarias/efectos de los fármacos , Antineoplásicos/efectos adversos , Percepción/efectos de los fármacos , Apetito/efectos de los fármacos , Valores de Referencia , Factores de Tiempo , Neoplasias de la Mama/psicología , Estudios Prospectivos , Análisis de Varianza , Carcinoma Lobular/psicología , Carcinoma Ductal de Mama/psicología , Estadísticas no Paramétricas , Preferencias Alimentarias/psicología
17.
Med Oncol ; 34(8): 144, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28726045

RESUMEN

The aim of this study was to evaluate the mental health consumption among patients with early-stage breast cancer in two radiation oncology departments in two countries (USA and Italy). Data were extracted from the medical records of consecutive patients treated between 2014 and 2015 in two centers. Extracted data included patient's demographics, treatment, referral to psychological supportive care programs, and prescribed psychotropic drugs. Data from the two centers were compared using Student's t, Wilcoxon, Fisher's exact, and Jonckheere-Terpstra tests. Adjusted relative risks (RR) were estimated using Poisson regression. A total of 231 (Italy = 110, USA = 121) patients were included, with a mean age of 60 years. The crude rate of psychological supportive care visits was similar in the US versus the Italian cohort (28.9 vs. 21.8%, p = 0.23). The crude rate of prescribed psychotropic drug was higher in the US cohort versus Italian cohort (43.8 vs. 18.2%, p < 0.0001). These differences remained significant after adjusting for breast cancer subtype, stage, and treatment (RR 1.8, 95 CI 1.17-2.76). Between 20 and 30% of patients receive psychological supportive care during treatment for breast cancer. The use of psychotropic medication was higher in the US cohort than the cohort from Italy. The reasons for these differences might be related to social and cultural differences and the method of prescribing medication.


Asunto(s)
Neoplasias de la Mama/complicaciones , Carcinoma Ductal de Mama/complicaciones , Carcinoma Intraductal no Infiltrante/complicaciones , Carcinoma Lobular/complicaciones , Trastornos Psicóticos/tratamiento farmacológico , Psicotrópicos/uso terapéutico , Neoplasias de la Mama/psicología , Neoplasias de la Mama/terapia , Carcinoma Ductal de Mama/psicología , Carcinoma Ductal de Mama/terapia , Carcinoma Intraductal no Infiltrante/psicología , Carcinoma Intraductal no Infiltrante/terapia , Carcinoma Lobular/psicología , Carcinoma Lobular/terapia , Estudios de Cohortes , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Cuidados Paliativos , Pronóstico , Trastornos Psicóticos/etiología , Trastornos Psicóticos/psicología , Grupos Raciales
18.
JAMA Surg ; 152(8): 741-748, 2017 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-28467530

RESUMEN

IMPORTANCE: Breast reconstruction has the potential to improve a person's body image and quality of life but has important risks. Variations in who undergoes breast reconstruction have led to questions about the quality of patient decisions. OBJECTIVE: To assess the quality of patient decisions about breast reconstruction. DESIGN, SETTING, AND PARTICIPANTS: A prospective, cross-sectional survey study was conducted from June 27, 2012, to February 28, 2014, at a single, academic, multidisciplinary oncology clinic among women planning to undergo mastectomy for stage I to III invasive ductal or lobular breast cancer, ductal carcinoma in situ, or prophylaxis. EXPOSURES: Mastectomy only and mastectomy with reconstruction. MAIN OUTCOME AND MEASURES: Knowledge, as ascertained using the Decision Quality Instrument; preference concordance, based on rating and ranking of key attributes; and decision quality, defined as having knowledge of 50% or more and preference concordance. RESULTS: During the 20-month period, 214 patients were eligible, 182 were approached, and 32 missed. We enrolled 145 patients (79.7% enrollment rate), and received surveys from 131 patients (72.0% participation rate). Five participants became ineligible. The final study population was 126 patients. Among the 126 women in the study (mean [SD] age, 53.2 [12.1] years), the mean (SD) knowledge score was 58.5% (16.2%) and did not differ by treatment group (mastectomy only, 55.2% [15.0%]; mastectomy with reconstruction, 60.5% [16.5%]). A total of 82 of 123 participants (66.7%) had a calculated treatment preference of mastectomy only; 39 of these women (47.6%) underwent mastectomy only. A total of 41 participants (32.5%) had a calculated treatment preference of mastectomy with reconstruction; 36 of these women (87.8%) underwent mastectomy with reconstruction. Overall, 52 of 120 participants (43.3%) made a high-quality decision. In multivariable analysis, white race/ethnicity (odds ratio [OR], 2.72; 95% CI, 1.00-7.38; P = .05), having private insurance (OR, 1.61; 95% CI, 1.35-1.93; P < .001), having a high school education or less (vs some college) (OR, 4.84; 95% CI, 1.22-19.21; P = .02), having a college degree (vs some college) (OR, 1.95; 95% CI, 1.53-2.49; P < .001), and not having a malignant neoplasm (eg, BRCA carriers) (OR, 3.13; 95% CI, 1.25-7.85; P = .01) were independently associated with making a high-quality decision. CONCLUSIONS AND RELEVANCE: A minority of patients undergoing mastectomy in a single academic center made a high-quality decision about reconstruction. Shared decision making is needed to support decisions about breast reconstruction.


Asunto(s)
Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Carcinoma Intraductal no Infiltrante/psicología , Carcinoma Lobular/psicología , Conducta de Elección , Mamoplastia/psicología , Neoplasias de la Mama/cirugía , Carcinoma Ductal de Mama/cirugía , Carcinoma Intraductal no Infiltrante/cirugía , Carcinoma Lobular/cirugía , Estudios Transversales , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Mastectomía/psicología , Persona de Mediana Edad , Prioridad del Paciente , Estudios Prospectivos , Calidad de Vida
19.
ABNF J ; 28(1): 9-13, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29873455

RESUMEN

Breast cancer is the number two leading cause of death in women all over the world and is often associated with poor quality of life (QOL). The positive and negative QOL factors influence the overall health and well-being of those affected with invasive ductal carcinoma (IDC). This literature review was structured to identify and understand both the positive and negative QOL factors throughout breast cancer treatment, as well as post breast cancer treatment. Systemic searches were done of three databases to gather data in breast cancer treatment from 2010-2015. Results identified the positive and negative factors associated with the QOL in relation to breast cancer treatment. The most prevalent positive QOL factors included patient expectations, decreased side effects, and increased survival rate. The most prevalent negative QOL factors included treatment, specific side effects and decreased quality of life. This review may guide healthcare professionals in incorporating new practices and identifying the best regimen to improving QOL. The positive and negative QOL factors, in relation to treatment, are important because they help healthcare professionals understand how those factors impact the overall health and well-being of individuals with IDC.


Asunto(s)
Neoplasias de la Mama , Carcinoma Ductal de Mama , Calidad de Vida , Femenino , Humanos , Neoplasias de la Mama/psicología , Neoplasias de la Mama/terapia , Carcinoma Ductal de Mama/psicología , Carcinoma Ductal de Mama/terapia
20.
Int J Cancer ; 140(4): 841-852, 2017 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-27859142

RESUMEN

Despite concerns about the mental health of breast cancer patients, little is known regarding the temporal risk pattern and risk factors of common mental disorders among these patients. We estimated standardized incidence ratios (SIRs) of depression, anxiety and stress-related disorders in a Swedish nationwide cohort of 40,849 women with invasive and 4,402 women with in situ breast cancer (2001-2010, median follow-up = 4.5 years). The impact of patient, tumor and treatment characteristics was analyzed using flexible parametric survival models in a regional cohort of 7,940 invasive breast cancer patients (2001-2013, median follow-up = 7.5 years). Women with invasive breast cancer showed increased rates of depression, anxiety and stress-related disorders [overall SIR (95% CI) = 1.57 (1.46-1.69), 1.55 (1.43-1.68) and 1.77 (1.60-1.95), respectively]. SIRs were highest shortly after diagnosis, but remained increased up to 5 years. Younger age at diagnosis, comorbidity, higher-grade disease, lymph node involvement and chemotherapy were independently associated with the risk of depression and anxiety in invasive cancer patients, with chemotherapy and higher-grade disease conferring short-term risk only, while comorbidities were mainly associated with late-onset events. No clinical risk factors were identified for stress-related disorders except for a greater risk associated with younger age. Patients with in situ cancer only showed an increased incidence of stress-related disorders during the first 6 months after diagnosis [SIR (95% CI) = 2.76 (1.31-5.79)]. The time-dependent risk profile of invasive cancer patients may guide health care professionals for timely and targeted psycho-oncologic interventions.


Asunto(s)
Ansiedad/epidemiología , Neoplasias de la Mama/psicología , Carcinoma Ductal de Mama/psicología , Carcinoma Lobular/psicología , Depresión/epidemiología , Estrés Psicológico/epidemiología , Adulto , Edad de Inicio , Anciano , Anciano de 80 o más Años , Carcinoma de Mama in situ/epidemiología , Carcinoma de Mama in situ/psicología , Carcinoma de Mama in situ/terapia , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/terapia , Carcinoma Ductal de Mama/epidemiología , Carcinoma Ductal de Mama/terapia , Carcinoma Lobular/epidemiología , Carcinoma Lobular/terapia , Comorbilidad , Progresión de la Enfermedad , Quimioterapia/psicología , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Persona de Mediana Edad , Invasividad Neoplásica , Modelos de Riesgos Proporcionales , Factores de Riesgo , Suecia/epidemiología , Factores de Tiempo , Adulto Joven
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