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2.
BMC Prim Care ; 24(1): 60, 2023 03 02.
Artigo em Inglês | MEDLINE | ID: mdl-36864391

RESUMO

BACKGROUND: The rapid rise of non-communicable diseases (NCDs) has become a significant public health concern in Bangladesh. This study assesses the readiness of primary healthcare facilities to manage the following NCDs: diabetes mellitus (DM), cervical cancer, chronic respiratory diseases (CRIs), and cardiovascular diseases (CVDs). METHODS: A cross-sectional survey was conducted between May 2021 and October 2021 among 126 public and private primary healthcare facilities (nine Upazila health complexes (UHCs), 36 union-level facilities (ULFs), 53 community clinics (CCs), and 28 private hospitals/clinics). The NCD-specific service readiness was assessed using the World Health Organization's (WHO) Service Availability and Readiness Assessment (SARA) reference manual. The facilities' readiness was assessed using the following four domains: guidelines and staff, basic equipment, diagnostic facility, and essential medicine. The mean readiness index (RI) score for each domain was calculated. Facilities with RI scores of above 70% were considered 'ready' to manage NCDs. RESULTS: The general services availability ranged between 47% for CCs and 83% for UHCs and the guidelines and staff accessibility were the highest for DM in the UHCs (72%); however, cervical cancer services were unavailable in the ULFs and CCs. The availability of basic equipment was the highest for cervical cancer (100%) in the UHCs and the lowest for DM (24%) in the ULFs. The essential medicine for CRI was 100% in both UHCs and ULFs compared to 25% in private facilities. The diagnostic capacity for CVD and essential medicine for cervical cancer was unavailable at all levels of public and private healthcare facilities. The overall mean RI for each of the four NCDs was below the cut-off value of 70%, with the highest (65%) for CRI in UHCs but unavailable for cervical cancer in CCs. CONCLUSION: All levels of primary healthcare facilities are currently not ready to manage NCDs. The notable deficits were the shortage of trained staff and guidelines, diagnostic facilities, and essential medicine. This study recommends increasing service availability to address the rising burden of NCDs at primary healthcare levels in Bangladesh.


Assuntos
Doenças Cardiovasculares , Medicamentos Essenciais , Doenças não Transmissíveis , Neoplasias do Colo do Útero , Humanos , Feminino , Bangladesh/epidemiologia , Estudos Transversais , Doenças não Transmissíveis/epidemiologia , Doenças não Transmissíveis/prevenção & controle , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/prevenção & controle , Instituições de Assistência Ambulatorial , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Atenção Primária à Saúde
3.
Front Public Health ; 10: 1015245, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36438215

RESUMO

Introduction: The weak health system is viewed as a major systematic obstacle to address the rising burden of non-communicable diseases (NCDs) in resource-poor settings. There is little information about the health system challenges and opportunities in organizing NCD services. This study examined the health system challenges and opportunities in organizing NCD services for four major NCDs (cervical cancer, diabetes mellitus, cardiovascular diseases, and chronic respiratory illnesses) at the primary healthcare (PHC) level in Bangladesh. Methods: Using a qualitative method, data were collected from May to October 2021 by conducting 15 in-depth interviews with local healthcare providers, 14 key informant interviews with facility-based providers and managers, and 16 focus group discussions with community members. Based on a health system dynamics framework, data were analyzed thematically. Information gathered through the methods and sources was triangulated to validate the data. Results: Organization of NCD services at the PHC level was influenced by a wide range of health system factors, including the lack of using standard treatment guidelines and protocols, under-regulated informal and profit-based private healthcare sectors, poor health information system and record-keeping, and poor coordination across healthcare providers and platforms. Furthermore, the lack of functional referral services; inadequate medicine, diagnostic facilities, and logistics supply; and a large number of untrained human resources emerged as key weaknesses that affected the organization of NCD services. The availability of NCD-related policy documents, the vast network of healthcare infrastructure and frontline staff, and increased demand for NCD services were identified as the major opportunities. Conclusion: Despite the substantial potential, the health system challenge impeded the organization of NCD services delivery at the PHC level. This weakness needs be to addressed to organize quality NCD services to better respond to the rising burden of NCDs at the PHC level.


Assuntos
Doenças não Transmissíveis , Humanos , Doenças não Transmissíveis/terapia , Bangladesh , Pesquisa Qualitativa , Atenção à Saúde , Doença Crônica , Atenção Primária à Saúde
4.
BMJ Open ; 12(2): e060387, 2022 Feb 09.
Artigo em Inglês | MEDLINE | ID: mdl-35140165

RESUMO

OBJECTIVE: To synthesise evidence on the primary healthcare system's readiness for preventing and managing non-communicable diseases (NCDs). DESIGN: Systematic review. DATA SOURCES: Ovid MEDLINE, EMBASE, CINAHL, PsycINFO and Scopus were searched from 1 January 1984 to 30 July 2021, with hand-searching references and expert advice. ELIGIBILITY CRITERIA: Any English-language health research with evidence of readiness/preparedness of the health system at the primary healthcare level in the context of four major NCDs: diabetes mellitus, cancer, chronic respiratory diseases (CRDs) and cardiovascular diseases (CVDs). DATA EXTRACTION AND SYNTHESIS: Two authors independently extracted data and assessed the bias. The full-text selected articles were then assessed using the Mixed Methods Appraisal Tool. Health system readiness was descriptively and thematically synthesised in line with the health system dynamics framework. RESULTS: Out of 7843 records, 23 papers were included in this review (15 quantitative, 3 qualitative and 5 mixed-method studies). The findings showed that existing literature predominantly examined health system readiness from the supply-side perspective as embedded in the WHO's health system framework. However, at the primary healthcare level, these components are insufficiently prepared for NCDs. Among NCDs, higher levels of readiness were reported for diabetes mellitus and hypertension in comparison to CRDs (asthma, chronic obstructive pulmonary disease), CVDs and cancer. There has been a dearth of research on the demand-side perspective, which is an essential component of a health system and must be addressed in the future research. CONCLUSION: The supply-side components at the primary healthcare level are inadequately ready to address the growing NCD burden. Improving supply-side factors, with a particular focus on CRDs, CVDs and cancer, and improving understanding of the demand-side components of the health system's readiness, may help to prevent and manage NCDs at the primary healthcare level.


Assuntos
Doenças Cardiovasculares , Diabetes Mellitus , Doenças não Transmissíveis , Transtornos Respiratórios , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Diabetes Mellitus/prevenção & controle , Programas Governamentais , Humanos , Doenças não Transmissíveis/prevenção & controle , Atenção Primária à Saúde
5.
BJU Int ; 130(4): 420-433, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-34784097

RESUMO

OBJECTIVES: To perform a systematic review and meta-analysis of the literature to understand the variation in the reporting of neuroendocrine staining and determine the influence of reporting neuroendocrine staining at diagnosis on patient outcomes. METHODS: Medical databases were searched to identify studies in which adenocarcinoma specimens were stained with any of the following four neuroendocrine markers: chromogranin A (CgA), neuron-specific enolase (NSE), synaptophysin and CD56. The prevalence of neuroendocrine staining and correlation of the prevalence of neuroendocrine staining to patient outcomes were analysed using a random-effects model. All statistical tests were two-sided. RESULTS: Sixty-two studies spanning 7616 patients were analysed. The pooled prevalence for the most common marker, CgA (41%), was similar to that of NSE (39%) and higher than that of synaptophysin (31%). The prevalence of CgA staining was significantly influenced by reporting criteria, where objective thresholds reduced the variation in prevalence to 26%. No correlation was found between CgA prevalence and tumour grade. Patients positive for CgA staining using objective criteria had more rapid biochemical progression (hazard ratio [HR] 1.98, 95% confidence interval [CI] 1.49 to 2.65) and poorer prostate cancer-specific survival (HR 7.03, 95% CI 2.55 to 19.39) compared to negative patients, even among those with low-risk cancers. CONCLUSION: Discrepancies in the reported prevalence of neuroendocrine cells in adenocarcinoma are driven by the inconsistent scoring criteria. This study unequivocally demonstrates that when neuroendocrine cell staining is assessed with objective criteria it identifies patients with poor clinical outcomes. Future studies are needed to determine the exact quantifiable thresholds for use in reporting neuroendocrine cell staining to identify patients at higher risk of progression.


Assuntos
Adenocarcinoma , Células Neuroendócrinas , Neoplasias da Próstata , Adenocarcinoma/patologia , Biomarcadores Tumorais/análise , Cromogranina A , Humanos , Masculino , Células Neuroendócrinas/química , Células Neuroendócrinas/patologia , Fosfopiruvato Hidratase , Neoplasias da Próstata/patologia , Sinaptofisina
6.
PLoS One ; 16(12): e0261238, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34890415

RESUMO

BACKGROUND: Lung cancer is the leading cause of cancer-related mortality worldwide. Demographic differential has been linked with the treatment outcome and survival in recent literature, mostly from the developed world. Considering diversity in population characteristics across income strata, it's worth assessing the link in low- and middle-income population as well. Current study aimed to assess the association of demographic characteristics with lung cancer survival in Bangladeshi lung cancer patients. METHODS & RESULTS: All newly diagnosed primary lung cancer cases attending the national institute of cancer research & Hospital (NICRH), a tertiary cancer care center in Dhaka, Bangladesh between 2018 and 2019 were considered for the study. Demographic information and clinical data were obtained from the patients' medical records by a trained physician. Survival estimate was generated using the Kaplan-Meier method and compared across demographic and clinicopathological categories using the log-rank test. Hazard ratio and 95% CI for treatment options are generated fitting multivariable Cox proportional hazard regression. Among 1868 patients, 84.6% were males and 15.4% were females, average (± standard deviation) age at diagnosis was 59.6±10.9 years, only 10.8% had not consumed tobacco of any form. Around two-thirds of the patient had Eastern Cooperative Oncology Group (ECOG) performance score ≥2, 29.5% had at least one comorbidity and 19.4% had metastasis at the time of presentation. Higher survival was associated with institutional education (HR 0.9; 95% CI 0.77, 0.99), and receipt of combined radiotherapy and chemotherapy (HR 0.56; 95% CI 0.46, 0.65; p <0.001). In contrast, lower survival was associated with older age between 60-69 years (HR 1.3; 95% CI 1.3, 1.5;), age ≥ 70 years (HR 1.4; 95% CI 1.1, 1.7), having any comorbidity (HR 1.1; 95% CI 1.0, 1.3), with ECOG score ≥ 3 (HR 1.41; 95% CI 1.01, 1.96) and receipt of radiotherapy treatments only (HR 1.6; 95% CI 1.3, 1.9). CONCLUSION: Older age, presence of one or more comorbidity, poorer performance status, and treatment with only RT appeared as a significant predictor of poorer prognosis of lung cancer in Bangladeshi patients. In contrast, having institutional education and treatment with combined Radiotherapy and Chemotherapy appeared as a predictor of a better prognosis. The finding of this study could serve as a basis for future studies inquiring into novel approaches for certain subgroups of patients believed to be challenged in limited resources.


Assuntos
Neoplasias Pulmonares/mortalidade , Idoso , Idoso de 80 Anos ou mais , Bangladesh/epidemiologia , Terapia Combinada , Demografia , Feminino , Humanos , Neoplasias Pulmonares/epidemiologia , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/terapia , Masculino , Pessoa de Meia-Idade , Prognóstico , Fatores de Risco , Taxa de Sobrevida
7.
Nutrients ; 13(11)2021 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-34836416

RESUMO

Type 2 diabetes mellitus is a common condition whose incidence is increasing worldwide, and for which obesity and diet are important risk factors. The aim of this study was to assess the association of three diet quality scores with diabetes risk and how much of the association was mediated through body size. The Melbourne Collaborative Cohort Study recruited 41,513 men and women aged 40-69 years during 1990-1994. At baseline, data were collected on lifestyle and diet, anthropometric measures were performed. Incident diabetes was assessed by self-report at follow-up surveys in 1994-1998 and 2003-2007. The associations between the dietary inflammatory index (DII®), Mediterranean Diet Score (MDS) and the Alternative Healthy Eating Index-2010 and incident diabetes were assessed using Poisson regression, adjusting for age, sex, physical activity, smoking, alcohol consumption, socio-economic status (area based) and family history of diabetes. Data from 39,185 participants were included in the analysis and 1989 cases of diabetes were identified. Both DII and AHEI-2010 were associated with diabetes incidence, but MDS was not. In the top quintile of DII (most pro-inflammatory) vs. the least inflammatory quintile IRR was 1.49 95% CI (1.30, 1.72), p trend across quintiles <0.001. For AHEI-2010 the IRR was 0.67 (0.58, 0.78), p trend <0.001 for the healthiest vs. the least healthy quintile. Mediation analysis indicated that body size (body mass index/waist to hip ratio) mediated 35-48% of the association with incident diabetes for the AHEI and DII. Healthier diets may reduce risk of diabetes both by reducing weight gain and other mechanisms such as reducing inflammation.


Assuntos
Diabetes Mellitus Tipo 2/epidemiologia , Dieta Saudável/estatística & dados numéricos , Dieta Mediterrânea/estatística & dados numéricos , Adulto , Idoso , Antropometria , Índice de Massa Corporal , Estudos de Coortes , Diabetes Mellitus Tipo 2/etiologia , Dieta/efeitos adversos , Feminino , Humanos , Incidência , Estilo de Vida , Masculino , Análise de Mediação , Pessoa de Meia-Idade , Distribuição de Poisson , Fatores de Risco , Vitória/epidemiologia , Relação Cintura-Quadril
8.
Public Health Nutr ; 24(18): 6157-6168, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-33875030

RESUMO

OBJECTIVE: To ascertain which of the Alternative Healthy Eating Index (AHEI) 2010, Dietary Inflammatory Index (DII®) and Mediterranean Diet Score (MDS) best predicted BMI and waist-to-hip circumference ratio (WHR). DESIGN: Body size was measured at baseline (1990-1994) and in 2003-2007. Diet was assessed at baseline using a FFQ, along with age, sex, socio-economic status, smoking, alcohol drinking, physical activity and country of birth. Regression coefficients and 95 % CI for the association of baseline dietary scores with follow-up BMI and WHR were generated using multivariable linear regression, adjusting for baseline body size, confounders and energy intake. SETTING: Population-based cohort in Melbourne, Australia. PARTICIPANTS: Included were data from 11 030 men and 16 774 women aged 40-69 years at baseline. RESULTS: Median (IQR) follow-up was 11·6 (10·7-12·8) years. BMI and WHR at follow-up were associated with baseline DII® (Q5 v. Q1 (BMI 0·41, 95 % CI 0·21, 0·61) and WHR 0·009, 95 % CI 0·006, 0·013)) and AHEI (Q5 v. Q1 (BMI -0·51, 95 % CI -0·68, -0·35) and WHR -0·011, 95 % CI -0·013, -0·008)). WHR, but not BMI, at follow-up was associated with baseline MDS (Group 3 most Mediterranean v. G1 (BMI -0·05, 95 % CI -0·23, 0·13) and WHR -0·004, 95 % CI -0·007, -0·001)). Based on Akaike's Information Criterion and Bayesian Information Criterion statistics, AHEI was a stronger predictor of body size than the other diet scores. CONCLUSIONS: Poor quality or pro-inflammatory diets predicted overall and central obesity. The AHEI may provide the best way to assess the obesogenic potential of diet.


Assuntos
Dieta , Obesidade Abdominal , Adulto , Idoso , Austrália/epidemiologia , Índice de Massa Corporal , Estudos de Coortes , Dieta/efeitos adversos , Dieta/estatística & dados numéricos , Dieta Mediterrânea/estatística & dados numéricos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/diagnóstico , Obesidade/epidemiologia , Obesidade/etiologia , Obesidade Abdominal/diagnóstico , Obesidade Abdominal/epidemiologia , Obesidade Abdominal/etiologia , Fatores de Risco , Relação Cintura-Quadril/estatística & dados numéricos
9.
Ann Work Expo Health ; 65(3): 255-265, 2021 04 22.
Artigo em Inglês | MEDLINE | ID: mdl-33367604

RESUMO

OBJECTIVES: An estimated 125 million workers are exposed to asbestos worldwide. Asbestos is classified by the International Agency for Research on Cancer as a Group 1 carcinogen. The association between occupational asbestos exposure and kidney cancer is not well established however. This study aimed to determine the mortality and incidence of kidney cancer in workers who have been exposed to asbestos. We performed a systematic review and meta-analysis to evaluate the association between occupational asbestos exposure and kidney cancer. METHODS: Medline, EMBASE, and Web of Science were searched according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines for articles on occupational asbestos exposure and kidney cancer. The studies reported the standardized mortality ratio (SMR) or standardized incidence ratio (SIR) of kidney cancer in workers exposed to asbestos. SMRs or SIRs with its 95% confidence interval (CI) were pooled using a fixed-effect model. RESULTS: Forty-nine cohort studies involving 335 492 workers were selected for analysis. These studies included 468 kidney cancer deaths and 160 incident cases. The overall pooled-SMR of kidney cancer was 0.95 (95% CI: 0.86-1.05), with no significant heterogeneity (PQ = 0.09, I2 = 24.87%). The overall pooled-SIR of kidney cancer was 0.95 (95% CI: 0.79-1.11), with no significant heterogeneity (PQ = 0.68, I2 = 0.00%). Subgroup analysis did not find any increased association with occupational asbestos exposure. There was no evidence of publication bias with Egger's test P values of 0.08 for mortality studies and 0.99 for incidence studies. CONCLUSIONS: This systematic review and meta-analysis did not show evidence of association between occupational asbestos exposure and kidney cancer mortality or incidence.


Assuntos
Amianto , Neoplasias Renais , Doenças Profissionais , Exposição Ocupacional , Amianto/efeitos adversos , Estudos de Coortes , Humanos , Neoplasias Renais/induzido quimicamente , Neoplasias Renais/epidemiologia , Doenças Profissionais/epidemiologia , Exposição Ocupacional/efeitos adversos
10.
Glob Heart ; 14(4): 347-353, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31523015

RESUMO

BACKGROUND: People with renal disease have a markedly higher risk of cardiovascular disease as well as morbidity and mortality after cardiac surgery. Little is known regarding the post-operative adverse outcomes following isolated coronary artery bypass graft (CABG) in the Australian population with renal disease. OBJECTIVES: The aim of this study was to examine the effect of different stages of renal disease on patients' risk of post-operative mortality and complications following isolated CABG in an Australian cohort. METHODS: Using the ANZSCTS (Australian and New Zealand Society of Cardiac and Thoracic Surgeons) registry, data from 44,968 patients who underwent isolated CABG between 2001 and 2014 were used. The effect of renal disease stages on short- and long-term outcomes were examined using multivariable logistic and Cox's regression methods respectively. RESULTS: Three of 4 Australian patients (74.6%) who underwent isolated CABG had some degree of renal disease: 50.2% mild; 20.9% moderate; 2.1% severe; and 1.6% dialysis-dependent. Adjusted risk of 30-day mortality increased with deteriorating renal disease from mild (1.6-fold) to dialysis-dependent (4.6-fold). Worsening renal disease was also associated with higher risk of post-operative complications. Hazard ratio for long-term survival shows steady increase of mortality risk with worsening renal disease categories from 1.1-fold for mild to 3.9-fold for patients on dialysis. CONCLUSIONS: Pre-existing renal disease is significantly associated with 30-day and long-term mortality, length of intensive care unit and hospital stay as well as several other post-operative complications.


Assuntos
Ponte de Artéria Coronária/efeitos adversos , Doença da Artéria Coronariana/cirurgia , Insuficiência Renal Crônica/complicações , Austrália/epidemiologia , Estudos de Coortes , Ponte de Artéria Coronária/estatística & dados numéricos , Doença da Artéria Coronariana/complicações , Doença da Artéria Coronariana/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nova Zelândia/epidemiologia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Diálise Renal/estatística & dados numéricos , Insuficiência Renal Crônica/epidemiologia , Fatores de Risco
11.
Sci Rep ; 9(1): 10248, 2019 07 15.
Artigo em Inglês | MEDLINE | ID: mdl-31308457

RESUMO

AIMS: The objective of this study was to identify the determinants of glycaemic control among people with type 2 diabetes mellitus in Bangladesh. A cross-sectional study was carried out during March to September 2017, and 1253 adult patients with type 2 diabetes mellitus were recruited from six hospitals. Data were collected from patients via face-to-face interview, and their medical records were reviewed. Multiple logistic regression analysis was performed. Among the participants, 53.2% were male. Mean (±SD) age was 54.1 (±12.1) years and mean (±SD) duration of diabetes was 9.9 (±7.2) years. About 82% participants had inadequate glycaemic control (HbA1c ≥ 7%) and 54.7% had very poor control (HbA1c ≥ 9%). Low education level, rural residence, unhealthy eating habits, insulin use, infrequent follow up check-ups and history of coronary artery diseases found associated with inadequate and very poor controls. Being female and smokeless tobacco consumer appeared to be associated with inadequate control however cognitive impairment was associated with very poor control only. Prevalence of inadequate glycaemic level was very high in Bangladesh. Having understood relatable lifestyle modification factors, demographics and co-morbidities among people with type 2 diabetes, health care providers in conjunction with patients should work together to address the glycaemic control.


Assuntos
Diabetes Mellitus Tipo 2/terapia , Gerenciamento Clínico , Índice Glicêmico/fisiologia , Adulto , Bangladesh/epidemiologia , Glicemia/análise , Comorbidade , Estudos Transversais , Diabetes Mellitus Tipo 2/complicações , Feminino , Hemoglobinas Glicadas/análise , Pessoal de Saúde , Humanos , Hipoglicemiantes , Masculino , Pessoa de Meia-Idade , Prevalência
12.
Asia Pac J Public Health ; 29(3): 189-198, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28434246

RESUMO

This study aimed to investigate factors affecting fruit and vegetables (FAVs) intake among Bangladeshi adults. Dietary data of 9275 adults from the Bangladesh Noncommunicable Disease Risk Factor Survey 2010 were analyzed. The mean age of the respondents was 42.4 (±13.5) years. Multistage cluster sampling was applied to identify samples. Demographics, personal habits, physical activity, diet, and anthropometric data were collected using the WHO-STEPs questionnaire. Average daily intake of <5 servings of FAVs combined was considered to be low FAV consumption, and its prevalence was 82.8%. A mixed-effect logistic regression model was fitted to assess association of factors with low FAV intake. Higher educational attainment, greater wealth, female sex, low physical activity, body mass index >25 kg/m2, and smokeless tobacco consumption were significantly associated with higher FAV consumption. Frequency of low FAV intake increased with increasing age and decreased with increasing educational attainment. Programs targeting people at risk of low FAV consumption are needed to promote consumption.


Assuntos
Dieta/estatística & dados numéricos , Frutas , Verduras , Adulto , Fatores Etários , Bangladesh , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , Fatores Socioeconômicos , Inquéritos e Questionários
13.
J Thorac Cardiovasc Surg ; 153(5): 1128-1135.e3, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28007407

RESUMO

OBJECTIVE: To compare the impact of different variable selection methods in multiple regression to develop a parsimonious model for predicting postoperative outcomes of patients undergoing cardiac surgery. METHODS: Data from 84,135 patients in the Australian and New Zealand Society of Cardiac and Thoracic Surgeons registry between 2001 and 2014 were analyzed. Primary outcome was 30-day-mortality. Mixed-effect logistic regressions were used to build the model. Missing values were imputed by the use of multiple imputations. The following 5 variable selection methods were compared: bootstrap receiver-operative characteristic (ROC), bootstrap Akaike information criteria, bootstrap Bayesian information criteria, and stepwise forward and stepwise backward methods. The final model's prediction performance was evaluated by the use of Frank Harrell's calibration curve and using a multifold cross-validation approach. RESULTS: Stepwise forward and backward methods selected same set of 21 variables into the model with the area under the ROC (AUC) of 0.8490. The bootstrap ROC method selected 13 variables with AUC of 0.8450. Bootstrap Bayesian information criteria and Akaike information criteria respectively selected 16 (AUC: 0.8470) and 23 (AUC: 0.8491) variables. Bootstrap ROC model was selected as the final model which showed very good discrimination and calibration power. CONCLUSIONS: Clinical suitability in terms of parsimony and prediction performance can be achieved substantially by using the bootstrap ROC method for the development of risk prediction models.


Assuntos
Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Técnicas de Apoio para a Decisão , Austrália , Procedimentos Cirúrgicos Cardíacos/mortalidade , Tomada de Decisão Clínica , Bases de Dados Factuais , Feminino , Humanos , Masculino , Valor Preditivo dos Testes , Sistema de Registros , Medição de Risco , Fatores de Risco , Resultado do Tratamento
14.
Heart Lung Circ ; 26(3): 301-308, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27546595

RESUMO

BACKGROUND: The aim of this study was to evaluate the impact of missing values on the prediction performance of the model predicting 30-day mortality following cardiac surgery as an example. METHODS: Information from 83,309 eligible patients, who underwent cardiac surgery, recorded in the Australia and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS) database registry between 2001 and 2014, was used. An existing 30-day mortality risk prediction model developed from ANZSCTS database was re-estimated using the complete cases (CC) analysis and using multiple imputation (MI) analysis. Agreement between the risks generated by the CC and MI analysis approaches was assessed by the Bland-Altman method. Performances of the two models were compared. RESULTS: One or more missing predictor variables were present in 15.8% of the patients in the dataset. The Bland-Altman plot demonstrated significant disagreement between the risk scores (p<0.0001) generated by MI and CC analysis approaches and showed a trend of increasing disagreement for patients with higher risk of mortality. Compared to CC analysis, MI analysis resulted in an average of 8.5% decrease in standard error, a measure of uncertainty. The MI model provided better prediction of mortality risk (observed: 2.69%; MI: 2.63% versus CC: 2.37%, P<0.001). CONCLUSION: 'Multiple imputation' of missing values improved the 30-day mortality risk prediction following cardiac surgery.


Assuntos
Procedimentos Cirúrgicos Cardíacos/mortalidade , Modelos Biológicos , Mortalidade , Sistema de Registros , Adulto , Idoso , Idoso de 80 Anos ou mais , Austrália/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nova Zelândia/epidemiologia , Valor Preditivo dos Testes , Fatores de Risco , Fatores de Tempo
15.
Cancer Imaging ; 16(1): 39, 2016 Nov 08.
Artigo em Inglês | MEDLINE | ID: mdl-27821180

RESUMO

BACKGROUND: The presence of cervical lymph node metastasis is an important prognostic factor for patients with head and neck squamous cell carcinomas (HNSCC). Accurate assessment of lymph node metastasis in these patients is essential for appropriate prognostic and management purposes. Here, we evaluated the effectiveness of the maximum standardized uptake value (SUVmax) on positron emission tomography (PET) in assessing lymph node metastasis in HNSCC prior to surgery. METHODS: A retrospective review of 74 patients with HNSCC who underwent PET/CT prior to neck dissection were examined. Pre-operative PET/CT scans were reviewed by two experienced nuclear medicine physicians and SUVmax of the largest node in each nodal basin documented. These were compared with the histology results of the neck dissection. RESULTS: A total of 359 nodal basins including 86 basins with metastatic nodes were evaluated. A nodal SUVmax ≥3.16 yielded a sensitivity of 74.4 % and specificity of 84.9 % in detecting metastatic nodes. The nodal SUVmax/Liver SUVmax ratio was found on receiver operating characteristic (ROC) to be effective in detecting metastatic nodes with an area under ROC curve of 0.90. A nodal SUVmax/Liver SUVmax ratio ≥0.90 yielded a sensitivity of 74.1 % and specificity of 93.4 %. By comparison, visual inspection yielded sensitivities of 66.3 and 61.6 % in observers 1 and 2 respectively. The corresponding specificities were 77.7 and 86.5 %. CONCLUSIONS: Nodal SUVmax and nodal SUVmax/liver SUVmax are both useful in the pre-operative detection of metastatic nodes with the latter being superior to visual inspection. The ratio is likely to be more useful as it corrects for inter-scanner variability.


Assuntos
Carcinoma de Células Escamosas/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Linfonodos/diagnóstico por imagem , Pescoço/diagnóstico por imagem , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Adulto , Idoso , Idoso de 80 Anos ou mais , Área Sob a Curva , Carcinoma de Células Escamosas/patologia , Feminino , Fluordesoxiglucose F18/farmacocinética , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Linfonodos/patologia , Metástase Linfática/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Pescoço/patologia , Cuidados Pré-Operatórios , Prognóstico , Curva ROC , Compostos Radiofarmacêuticos/farmacocinética , Estudos Retrospectivos , Sensibilidade e Especificidade , Carcinoma de Células Escamosas de Cabeça e Pescoço
17.
Indian J Public Health ; 60(1): 17-25, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26911213

RESUMO

BACKGROUND: Nationally representative data on noncommunicable disease (NCD) risk factors are lacking in Bangladesh. This study was done to determine the prevalence of common risk factors for major NCDs among men and women of rural and urban areas of Bangladesh. MATERIALS AND METHODS: This survey was done with 9,275 individuals aged 25 years or older randomly drawn from all over the country. Information on diet, physical activity, tobacco and alcohol, and treatment history for hypertension and diabetes were collected. Height, weight, waist circumference, and blood pressure (BP) were measured. RESULTS: There were 4,312 men and 4,963 women with the mean age of 42 years (standard deviation 13 years). Half of them (54%) used tobacco in some form, <1% consumed alcohol within the past 30 days, 92% did not consume adequate fruit and vegetables (five servings or more), and 35% had low physical activity level [<600 metabolic equivalent (MET) min per week]. Documented diabetes was found in 4% of the participants. Seventeen percent were overweight [body mass index (BMI) ≥25 kg/m 2 and 21% had abdominal obesity (men ≥94, women ≥80 cm). Overall, 21% people had hypertension (blood pressure ≥140/90 mmHg or medication). Physical inactivity, alcohol intake, hypertension, obesity, and diabetes were more prevalent in urban areas, as opposed to tobacco. Tobacco intake showed a decreasing gradient, but hypertension, obesity, diabetes, and low physical activity showed an increasing gradient across the wealth quartiles. CONCLUSION: Risk factors are widely prevalent in Bangladeshi people across sexes and across both rural and urban areas of residences. NCD prevention through risk factor control, and early detection and treatment of hypertension and diabetes are warranted.


Assuntos
Doenças não Transmissíveis , Adulto , Bangladesh/epidemiologia , Estudos Transversais , Feminino , Humanos , Hipertensão/epidemiologia , Índia , Masculino , Doenças não Transmissíveis/epidemiologia , Obesidade/epidemiologia , Prevalência , Fatores de Risco , Fumar , Inquéritos e Questionários
18.
BMC Public Health ; 15: 659, 2015 Jul 14.
Artigo em Inglês | MEDLINE | ID: mdl-26169788

RESUMO

BACKGROUND: Non-communicable diseases (NCDs) have already become major killers in Bangladesh. Once NCDs are developed, they become chronic health and economic problems. Their primary prevention is linked to their common risk factors. This study was conducted to determine the prevalence of NCD risk factors with a focus on their clustering in Bangladeshi adults. METHODS: This nationally representative study was done in 4,073 (1,812 men and 2,261 women) adults aged 25 years or older selected from rural and urban households. Multistage cluster sampling design was used. Selected variables were in line with steps I and II of WHO stepwise surveillance except alcohol. RESULTS: Forty-four percent used tobacco in any form. Almost 93% did not consume adequate fruit and vegetables (5 servings or more). Thirty eight percent had low physical activity level (<600 MET-minutes/week). One-quarter (26%) were overweight (body mass index > =25 kg/m^2). Twenty-one percent had hypertension (blood pressure > =140/90 mmHg or medication) and about 5% had documented diabetes. Upon examination of risk factor clustering, we observed that 38% had at least three risk factors. After this threshold, clustering suddenly dropped down to a fairly low level. Using this threshold as a cut-off, clustering of risk factors was associated with age, male gender, urban residence, educational levels and quality of house in multivariate analysis. CONCLUSION: Prevalence of NCD risk factors is fairly high in Bangladeshi adults with a tendency of clustering. If a risk factor such as hypertension is detected, a closer look for other risk factors has to be given in both at clinical and public health settings. Clustering raises risk by more than a summation of risk factors. Our findings, therefore, suggest that Bangladesh could expect a significant increase in NCDs in near future.


Assuntos
Diabetes Mellitus/epidemiologia , Hipertensão/epidemiologia , Sobrepeso/epidemiologia , Adulto , Idoso , Bangladesh/epidemiologia , Índice de Massa Corporal , Análise por Conglomerados , Dieta , Exercício Físico , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Saúde Pública , Características de Residência , Fatores de Risco , Fatores Sexuais , Fumar/epidemiologia , Fatores Socioeconômicos , Inquéritos e Questionários
19.
Bangladesh Med Res Counc Bull ; 36(2): 68-73, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21473205

RESUMO

PURPOSE: Early detection of ovarian malignancy is of great clinical importance. The high mortality rate is due to the difficulties with the early detection of ovarian cancer. Current research attempted to assess the accuracy of Color Doppler Sonography and serum CA-125 level as diagnostic tool of ovarian tumor. MATERIALS AND METHODS: In this cross-sectional study, 60 consecutive patients with ovarian tumor attending the Department of Obstetrics and Gynecology of BSMMU were recruited. Of the study participants 23.3% belong to 16-25 year age group, 20% belong to 26-35 years age group and 23.30% each were of 46-55 years and > 55 years age group. All the patients recruited were from in-patient department and had undergone surgery. Following excision, routine histopathology revealed 43.30% malignant (n=26) and 56.7% (n=34) benign ovarian lesion. Data were collected from the clinical history form and bimanual pelvic examination, serum CA 125 levels, estimation of Resistance index (RI), Pulsatility Index (PI), Novel Index by CDS and post-operative histo-pathological findings were then recorded. Sensitivity, specificity, accuracy, positive and negative predictive value of the diagnosis made by CDS, CA125, in the discrimination of the benign and malignant ovarian tumors was calculated. Using Receiver operative characteristics analysis the accuracy of RI, PI, CA 125 and Novel Index in the diagnosis of ovarian tumor (benign or malignant) were assessed. RESULTS: With the Cut-off of < .5, Resistance Index is found to be capable of detecting 92% of malignant cases (sensitivity 91.7), and could detect 89% (specificity 88.9) of benign cases correctly which translates in to 90% accuracy in the diagnosis of ovarian tumor. Predictive values for positive (84.6) and negative (94.1) tests were also found to be quite high. Pulsatility index was found to be moderate accuracy (63.3%) with cutoff <1 for malignancy, however low predictive value for a positive test (38.5) questions its use. Both CA-125 and Novel Index showed similar level of sensitivity and specificity. Although Novel Index is derivative of CA125, Novel Index demonstrated better diagnostic accuracy and negative predictive value. The cutoff for CA 125 was mandated as 83.58. With the value the sensitivity is 76.9% and the specificity is 94.1%. RI is found to be more sensitive in detection of positive cases (Malignant) and CA125 is found to be more accurate in detection of negative cases (Benign). However a combination could be tried to make a better detection. CONCLUSION: Color Doppler ultra-sonography and CA125 excels in different tasks, the study concludes in favor of concurrent use of the methods for improving efficacy and thus early detection of ovarian malignancy.


Assuntos
Antígeno Ca-125/sangue , Neoplasias Ovarianas/sangue , Neoplasias Ovarianas/diagnóstico por imagem , Adolescente , Adulto , Estudos Transversais , Detecção Precoce de Câncer , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias Ovarianas/cirurgia , Ultrassonografia Doppler em Cores , Adulto Jovem
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