Critical decisions: A mixed-methods study of decision-making among diverse gynecologic cancer patients considering therapeutic clinical trial enrollment.

OBJECTIVE: Participation in therapeutic clinical trials does not reflect the diversity of gynecologic cancer patients, limiting access to novel therapeutics and generalizability of results. Reasons for inequities in participation among historically underrepresented populations remain undertheorized, as studies have shown equal willingness to participate among groups. We sought to apply a precarity framework to conceptualize the factors that impact patients' desire to enroll, to improve equity in gynecologic oncology clinical trial participation. METHODS: Gynecologic cancer patients at a single tertiary care facility in the Southwestern United States who discussed participation in therapeutic clinical trial with their oncology provider from 2020 to 2021 were identified. Enrolled participants completed surveys and qualitative interviews regarding treatment experiences and decision-making. Oncology providers completed parallel surveys at the time of their patient's enrollment. Descriptive statistics and thematic coding were used to analyze data. RESULTS: 30 patients were enrolled and participated in surveys and interviews. No differences were found in quantitative data assessing shared decision-making and patient-centered communication between those who enrolled and those who did not. Qualitative data demonstrated that patients who declined trial enrollment expressed concerns regarding uncertainty and loss of control, independence in decision-making, and significant resource challenges and financial toxicity of cancer treatment. CONCLUSIONS: We identified a constellation of factors that contribute to desire to enroll in clinical trials, that we describe using the framework of precarity. Through identification of precarious patients and mitigation of burdens, we anticipate improved enrollment and retention in therapeutic clinical trials among diverse gynecologic oncology patients.

High performance implementation of the hierarchical likelihood for generalized linear mixed models: an application to estimate the potassium reference range in massive electronic health records datasets.

BACKGROUND: Converting electronic health record (EHR) entries to useful clinical inferences requires one to address the poor scalability of existing implementations of Generalized Linear Mixed Models (GLMM) for repeated measures. The major computational bottleneck concerns the numerical evaluation of multivariable integrals, which even for the simplest EHR analyses may involve millions of dimensions (one for each patient). The hierarchical likelihood (h-lik) approach to GLMMs is a methodologically rigorous framework for the estimation of GLMMs that is based on the Laplace Approximation (LA), which replaces integration with numerical optimization, and thus scales very well with dimensionality. METHODS: We present a high-performance, direct implementation of the h-lik for GLMMs in the R package TMB. Using this approach, we examined the relation of repeated serum potassium measurements and survival in the Cerner Real World Data (CRWD) EHR database. Analyzing this data requires the evaluation of an integral in over 3 million dimensions, putting this problem beyond the reach of conventional approaches. We also assessed the scalability and accuracy of LA in smaller samples of 1 and 10% size of the full dataset that were analyzed via the a) original, interconnected Generalized Linear Models (iGLM), approach to h-lik, b) Adaptive Gaussian Hermite (AGH) and c) the gold standard for multivariate integration Markov Chain Monte Carlo (MCMC). RESULTS: Random effects estimates generated by the LA were within 10% of the values obtained by the iGLMs, AGH and MCMC techniques. The H-lik approach was 4-30 times faster than AGH and nearly 800 times faster than MCMC. The major clinical inferences in this problem are the establishment of the non-linear relationship between the potassium level and the risk of mortality, as well as estimates of the individual and health care facility sources of variations for mortality risk in CRWD. CONCLUSIONS: We found that the direct implementation of the h-lik offers a computationally efficient, numerically accurate approach for the analysis of extremely large, real world repeated measures data via the h-lik approach to GLMMs. The clinical inference from our analysis may guide choices of treatment thresholds for treating potassium disorders in the clinic.

Cognitive assessment in a predominantly Hispanic and Native American population in New Mexico and its association with kidney transplant wait-listing.

The association between cognitive function and the likelihood of kidney transplant (KT) wait-listing, especially in minority populations, has not been clearly delineated. We performed a retrospective review of our pre-KT patients, who consist mainly of Hispanics and Native Americans, over a 16-month period. We collected data on baseline demographics and the Montreal Cognitive Assessment (MoCA) score, at the initial KT evaluation. We defined cognitive impairment as MoCA scores of <24. We constructed linear regression models to identify associations between baseline characteristics with MoCA scores and used Cox proportional hazards models to assess associations between MoCA score and KT wait-listing. During the study period, 154 patients completed the MoCA during their initial evaluation. Mean (standard deviation) MoCA scores were 23.9 (4.6), with 58 (38%) participants scoring <24. Advanced age, lower education and being on dialysis were associated with lower MoCA scores. For every one-point increase in MoCA, the likelihood of being wait-listed increased 1.10-fold (95% CI 1.01-1.19, P = .022). Being Native American and having kidney disease due to diabetes or hypertension were associated with longer time to wait-listing. Cognitive impairment was common in our pre-KT patients and was associated with a lower likelihood of KT wait-listing.

Study protocol: rationale and design of the community-based prospective cohort study of kidney function and diabetes in rural New Mexico, the COMPASS study.

BACKGROUND: Rural areas in the state of New Mexico have been the "ground-zero" for the epidemic of diabetic Chronic Kidney Disease (CKD) in the United States. However, there is limited research about risk factors of diabetic CKD in this area and scarce data regarding the performance of emerging markers of renal filtration and epigenetic biomarkers of renal function and diabetes in this area with its unique ethnic/racial population. We designed the COMPASS study as a community-based program in rural New Mexico aiming to screen for CKD and to discover CKD-related translational biomarkers. METHODS/DESIGN: The study involves a prospective, longitudinal cohort design involving individuals living in rural New Mexico. Participants undergo a screening for kidney disease using markers of abnormal renal filtration (impaired glomerular filtration rate) or damage (albuminuria). Those found to have CKD on the basis of these tests or those at risk for CKD are enrolled in a prospective longitudinal cohort. We measure markers of renal function, insulin resistance and epigenetics (microRNAs) on patients. Individuals are invited to participate in interviews and focus groups in order to characterize their attitudes towards research and barriers or facilitators to participation in future research studies about kidney disease. DISCUSSION: This study will provide important data about the local epidemiology of kidney disease in a high-risk rural setting and the utility of emerging renal filtration markers (Beta 2 Microglobulin and Cystatin C), while generating data and methods for the analyses of microRNA biomarkers. The qualitative research subproject will identify factors associated with increased willingness to participate in future translational research projects. With its geographical focus, this study will address a critical disparity in kidney disease research, while generating novel epigenetic data that are relevant for future studies in the general population.

Polymorphisms in HLA-DPB1 are associated with differences in rubella virus-specific humoral immunity after vaccination.

Vaccination with live attenuated rubella virus induces a strong immune response in most individuals. However, small numbers of subjects never reach or maintain protective antibody levels, and there is a high degree of variability in immune response. We have previously described genetic polymorphisms in HLA and other candidate genes that are associated with interindividual differences in humoral immunity to rubella virus. To expand our previous work, we performed a genome-wide association study (GWAS) to discover single-nucleotide polymorphisms (SNPs) associated with rubella virus-specific neutralizing antibodies. We identified rs2064479 in the HLA-DPB1 genetic region as being significantly associated with humoral immune response variations after rubella vaccination (P = 8.62 × 10(-8)). All other significant SNPs in this GWAS were located near the HLA-DPB1 gene (P ≤ 1 × 10(-7)). These findings demonstrate that polymorphisms in HLA-DPB1 are strongly associated with interindividual differences in neutralizing antibody levels to rubella vaccination and represent a validation of our previous HLA work.

Differing Experiences of Nutrition Care During Treatment Among Oncology Nurses, Providers, and Patients.

BACKGROUND: Provision of nutrition care for patients with cancer represents a key component of holistic oncology care. However, information is limited about the use and perceptions of registered dietitian-led nutrition care in the oncology setting. OBJECTIVES: This study aimed to better understand the experiences and expectations of patients and healthcare workers regarding nutrition care during outpatient cancer treatment. METHODS: Oncology care team members (N = 55) and patients (N = 90) completed a survey about their knowledge of and interest in nutrition care. A subset of participants completed semistructured interviews to capture experiences with and perspectives on nutrition care practices. FINDINGS: The majority of patients (n = 73) reported experiencing at least one nutrition impact symptom, but only 14 indicated that they frequently discussed nutrition during provider visits. In addition, 40 oncology care team members indicated frequently discussing nutrition at visits, although 13 were unaware of local nutrition resources.

A novel, microvascular evaluation method and device for early diagnosis of peripheral artery disease and chronic limb-threatening ischemia in individuals with diabetes.

Objective: A novel transdermal arterial gasotransmitter sensor (TAGS) has been tested as a diagnostic tool for lower limb microvascular disease in individuals with and without diabetes mellitus (DM). Methods: The TAGS system noninvasively measures hydrogen sulfide (H2S) emitted from the skin. Measurements were made on the forearm and lower limbs of individuals from three cohorts, including subjects with DM and chronic limb-threatening ischemia, to evaluate skin microvascular integrity. These measurements were compared with diagnosis of peripheral artery disease (PAD) using the standard approach of the toe brachial index. Other measures of vascular health were made in some subjects including fasting blood glucose, hemoglobin A1c, plasma lipids, blood pressure, estimated glomerular filtration, and body mass index. Results: The leg:arm ratio of H2S emissions correlated with risk factors for microvascular disease (ie, high-density lipoprotein levels, estimated glomerular filtration rate, systolic blood pressure, and hemoglobin A1c). The ratios were significantly lower in symptomatic DM subjects being treated for chronic limb-threatening ischemia (n = 8, 0.48 ± 0.21) compared with healthy controls (n = 5, 1.08 ± 0.30; P = .0001) and with asymptomatic DM subjects (n = 4, 0.79 ± 0.08; P = .0086). The asymptomatic DM group ratios were also significantly lower than the healthy controls (P = .0194). Using ratios of leg:arm transdermal H2S measurement (17 subjects, 34 ratios), the overall accuracy to identify limbs with severe PAD had an area under the curve of the receiver operating curve of 0.93. Conclusions: Ratios of transdermal H2S measurements are lower in legs with impaired microvascular function, and the decrease in ratio precedes clinically apparent severe microvascular disease and diabetic ulcers. The TAGS instrument is a novel, sensitive tool that may aid in the early detection and monitoring of PAD complications and efforts for limb salvage.

Improving Sexual and Gender Minority Cancer Care: Patient and Caregiver Perspectives From a Multi-Methods Pilot Study.

Purpose: Up to 1 million lesbian, gay, bisexual, and transgender (i.e., sexual and gender minority, SGM) individuals in the United States have histories of cancer. This medically underserved population is diverse, with complex sexualities and gender identities, and distinct health concerns. SGM persons experience disproportionate risks for, and rates of, anal, breast, cervical, colorectal, endometrial, lung, and prostate cancers, in addition to cancers affecting transgender persons who have undergone sex-reassignment. SGM individuals are linked by shared experiences of stigmatization as a minority population for which little cancer research has been conducted. SGM cancer patients frequently report reluctance to seek healthcare, have poorer outcomes following diagnosis, engage in elevated risk behaviors (i.e. smoking and alcohol use) even after cancer diagnosis, have difficulty making emotional adjustment to illness, and experience higher rates of psychological distress. They report less satisfaction with cancer care, deficiencies in patient-centeredness and shared decision-making, gaps in care, and social isolation. Minority stress resulting from experiences of anti-SGM sentiment and discrimination affects cancer patients and their informal cancer caregivers. Our paper presents findings from a pilot study to identify gaps and opportunities to improve cancer care for SGM patients and caregivers at the University of New Mexico Comprehensive Cancer Center. Methods: Between June 2020 and July 2021, we used a multi-methods research design informed by ecological theory to collect qualitative and quantitative data regarding cancer patient and caregiver quality of life (QoL) and experiences of cancer and survivorship care. We used PROMIS measures distributed via REDCap to assess QoL (i.e., fatigue, pain interference, pain intensity, anxiety, depression, emotional support, social isolation, and companionship), and conducted in-depth semi-structured interviews. We recruited 10 SGM cancer patients and 8 heterosexual, cisgender (H/C) patient matches, and their self-identified informal cancer caregivers (n=36, dyad total n=18). Interviews ranged from 1 to 2 hours, were audio-recorded and transcribed for analysis. The study was approved by the University of New Mexico Human Research Protections Office Institutional Review Board. Results: Results of the PROMIS QoL assessments indicated that SGM patients reported greater anxiety [mean (SD) = 54.5 (8.8)] and depression [mean (SD) = 49.3 (4.8)] than H/C patients [mean (SD)=51.6 (7.5) and 45.4 (6.8) respectively], while heterosexual, cisgender (H/C) patients reported higher fatigue [mean (SD) =52.04 (8.18)] and stronger pain intensity than SGM patients [mean (SD)=48.3 (9.1) and 37.8 (9.1) respectively]. SGM patients reported higher levels of social isolation [mean (SD) = 48.3 (7.3) vs. 42.1 (7.4) for H/C patients, whereas H/C patients reported more emotional support (mean (SD) =57.5 (9.3) vs. 53.0 (6.9)] and companionship [mean (SD) = 55.2 (8.6) vs. 51.5 (11.0)]. SGM and H/C differences in caregiver QoL were most notable with regards to higher levels of fatigue [mean (SD) = 47.1 (6.0) for SGM, and 42.4 (11.5) for H/C] and companionship [mean (SD) = 55.3 (6.0) for SGM, and 50.9 (5.5) for H/C]. Qualitative interviews supported our quantitative results. SGM patients and caregivers articulated experiences of anti-SGM stigma and discrimination contributing to minority stress that influenced their initial cancer care encounters. SGM dyads had more trepidation and/or medical mistrust during initial cancer care encounters when compared to H/C patients and caregivers. SGM patients questioned care that was not culturally responsive to SGM preferences, while H/C patients were more apt to identify gaps in communication and perceived lack of clarity regarding cancer care delivery. Although SGM patients experienced high satisfaction with their cancer care once they developed trust with their providers, they discussed desires to have more direct conversations with their oncologists about their sexual orientation and gender identities and sexual health. All patients and providers in the study (SGM and H/C) appreciated their oncology care teams. All patients and caregivers relied on social networks comprised of friends and family, although SGM patients and caregivers had smaller social networks and relied less on biological family, and single SGM individuals experienced challenges accessing cancer care and struggled with social isolation. We discovered too, that all caregivers, regardless of Sexual Orientation and Gender Identity (SOGI), perceived a lack of support and information pertaining to their loved one's treatment, side effects and best way to provide care. Conclusions: This study demonstrates that prior stigmatizing experiences contribute to minority stress and medical mistrust for SGM cancer patients and their informal caregivers across the cancer care experience. Findings point to specific gaps in SGM cancer patient care, including lack of conversation about patient SOGI, inadequate staff and oncology provider SGM specific knowledge and cultural competence/cultural humility training, and insufficient patient supports for those who lack social support during cancer care treatment. Further, this study reveals inadequacies in SGM specific support, and overall support services for informal cancer caregivers. Additional research is required to develop targeted interventions to address minority stress and clinic environment concerns to improve cancer care for SGM patients. Importantly, while there were differences between SGM and H/C experiences of cancer treatment, significant similarities also emerged. Caregiver expressed consensus about the current lack of support and guidance for informal caregivers of cancer patients. Future work should focus on providing caregiver-specific resources in the clinic setting and facilitating support groups for caregivers to network with one another, as well as for tailoring SGM specific caregiver support services. Our findings highlight areas for improving cancer care for the SGM community, as well as a broader population of patients and caregivers.

Southwest Harvest for Health: An Adapted Mentored Vegetable Gardening Intervention for Cancer Survivors.

Harvest for Health is a home-based vegetable gardening intervention that pairs cancer survivors with Master Gardeners from the Cooperative Extension System. Initially developed and tested in Alabama, the program was adapted for the different climate, growing conditions, and population in New Mexico. This paper chronicles the feasibility, acceptability, and preliminary efficacy of "Southwest Harvest for Health". During the nine-month single-arm trial, 30 cancer survivor-Master Gardener dyads worked together to establish and maintain three seasonal gardens. Primary outcomes were accrual, retention, and satisfaction. Secondary outcomes were vegetable and fruit (V and F) intake, physical activity, and quality of life. Recruitment was diverse and robust, with 30 survivors of various cancers, aged 50-83, roughly one-third minority, and two-thirds females enrolled in just 60 days. Despite challenges due to the COVID-19 pandemic, retention to the nine-month study was 100%, 93% reported "good-to-excellent" satisfaction, and 87% "would do it again." A median increase of 1.2 servings of V and F/day was documented. The adapted home-based vegetable gardening program was feasible, well-received, and resulted in increased V and F consumption among adult cancer survivors. Future studies are needed to evaluate the effectiveness of this program and to inform strategies to increase the successful implementation and further dissemination of this intervention.

Metabolic syndrome, inflammation, and nonamnestic mild cognitive impairment in older persons: a population-based study.

The metabolic syndrome (MetS) is more strongly associated with cognitive impairment in the presence of inflammation. This suggests that the association of MetS with mild cognitive impairment (MCI) may vary with the etiology and the subtype of MCI. This study investigated the association between MetS with or without inflammation and MCI [amnestic (a-MCI) and nonamnestic (na-MCI)]. We studied a randomly selected sample of 1969 participants (ages 70 to 89 y) from Olmsted County, MN, using the Clinical Dementia Rating Scale, a neurologic evaluation, and neuropsychologic testing. Data for participants were reviewed for a diagnosis of normal cognition, MCI, or dementia. Clinical components of MetS were ascertained by interview and confirmed from the medical records; biochemical measurements were assayed from a blood draw. We compared 88 na-MCI cases and 241 a-MCI cases with 1640 cognitively normal participants. MetS was not associated with either na-MCI or a-MCI. High C-reactive protein (CRP; highest tertile vs lowest tertile) was associated with na-MCI [odds ratio (OR)=1.85; 95% confidence interval (CI)=1.05, 3.24] but not with a-MCI, after adjusting for sex, age, and years of education. The combination of MetS and high CRP (compared to no MetS and lowest CRP tertile) was associated with na-MCI (OR=2.31; 95% CI=1.07, 5.00), but not with a-MCI (OR=0.96; 95% CI=0.59, 1.54). The combined presence of MetS and high levels of inflammation is associated with na-MCI in this elderly cohort, and suggests etiologic differences in MCI subtypes.

An automated approach for estimation of breast density.

Breast density is a strong risk factor for breast cancer; however, no standard assessment method exists. An automated breast density method was modified and compared with a semi-automated, user-assisted thresholding method (Cumulus method) and the Breast Imaging Reporting and Data System four-category tissue composition measure for their ability to predict future breast cancer risk. The three estimation methods were evaluated in a matched breast cancer case-control (n = 372 and n = 713, respectively) study at the Mayo Clinic using digitized film mammograms. Mammograms from the craniocaudal view of the noncancerous breast were acquired on average 7 years before diagnosis. Two controls with no previous history of breast cancer from the screening practice were matched to each case on age, number of previous screening mammograms, final screening exam date, menopausal status at this date, interval between earliest and latest available mammograms, and residence. Both Pearson linear correlation (R) and Spearman rank correlation (r) coefficients were used for comparing the three methods as appropriate. Conditional logistic regression was used to estimate the risk for breast cancer (odds ratios and 95% confidence intervals) associated with the quartiles of percent breast density (automated breast density method, Cumulus method) or Breast Imaging Reporting and Data System categories. The area under the receiver operator characteristic curve was estimated and used to compare the discriminatory capabilities of each approach. The continuous measures (automated breast density method and Cumulus method) were highly correlated with each other (R = 0.70) but less with Breast Imaging Reporting and Data System (r = 0.49 for automated breast density method and r = 0.57 for Cumulus method). Risk estimates associated with the lowest to highest quartiles of automated breast density method were greater in magnitude [odds ratios: 1.0 (reference), 2.3, 3.0, 5.2; P trend < 0.001] than the corresponding quartiles for the Cumulus method [odds ratios: 1.0 (reference), 1.7, 2.1, and 3.8; P trend < 0.001] and Breast Imaging Reporting and Data System [odds ratios: 1.0 (reference), 1.6, 1.5, 2.6; P trend < 0.001] method. However, all methods similarly discriminated between case and control status; areas under the receiver operator characteristic curve were 0.64, 0.63, and 0.61 for automated breast density method, Cumulus method, and Breast Imaging Reporting and Data System, respectively. The automated breast density method is a viable option for quantitatively assessing breast density from digitized film mammograms.

Objective and subjective sleep disorders in automated peritoneal dialysis.

BACKGROUND: Automated peritoneal dialysis (APD) is one of the fastest growing dialysis modalities. It is unknown whether sleep and mood are disturbed while performing repeated overnight exchanges. OBJECTIVES: In this report, we aim to describe and compare the prevalence of sleep-disordered breathing (SDB), periodic limb movements (PLMS), poor sleep quality (SQ), and depression among APD patients compared with stages 3b-5 (estimated glomerular filtration rate ≤44 ml/min/1.73 m2) chronic kidney disease (CKD) and hemodialysis (HD) patients. DESIGN: This is a cross-sectional, descriptive study. SETTING: Study participants were recruited from outpatient nephrology clinics, local dialysis centers, and the Thomas E. Starzl Transplant Institute in Western Pennsylvania between April 2004 and July 2009. PATIENTS: There were 186 participants in this study including 22 APD patients, 89 CKD patients, and 75 HD patients. MEASUREMENTS: In-home polysomnography was performed and two questionnaires were completed, the Pittsburgh Sleep Quality Index (PSQI) and the Patient Health Questionnaire-9 (PHQ-9). METHODS: SDB and PLMS were quantified by in-home unattended polysomnography; poor SQ was defined by a score >5 on the PSQI, and the presence of moderate to severe depression was defined by a score >5 on the PHQ-9. RESULTS: The APD patients had a median age of 37.5 years, were predominantly female (72.7 %), and had a median body mass index (BMI) of 23.8 kg/m2. In univariate analyses, APD patients had significantly lower apnea-hypopnea index compared to HD patients by 12.2 points (likelihood ratio test p = 0.008) and revealed the least percent of TST with nocturnal hypoxemia compared to CKD patients by 2.7 points, respectively (likelihood ratio test p = 0.01). The APD group had also significantly greater stages 3 to 4 sleep compared to the CKD patients by 8.6 points (likelihood ratio test p = 0.009). In multivariate analyses and after adjustment for age, gender, race, and BMI, both APD and HD patients had higher average PSQI scores than CKD patients by 2.54 and 2.22 points, respectively (likelihood ratio test p = 0.005). No other comparisons of sleep parameters among groups reached statistical significance. LIMITATIONS: The limitations of this study are the small sample size of the APD population and the demographic and clinical differences among the three study groups. CONCLUSIONS: Despite differences in univariate analyses, after multivariate adjustment, APD patients had similar sleep parameters and sleep architecture and as poor SQ and symptoms of depression as HD patients. Future studies with larger APD cohorts are needed.

MISE EN CONTEXTE: La dialyse péritonéale automatisée (DPA) est l'une des méthodes de traitement pour l'insuffisance rénale terminale connaissant la plus forte croissance. Toutefois, l'influence de la pratique répétée de cette procédure sur la qualité du sommeil et sur l'humeur du patient demeure peu documentée. OBJECTIFS DE L'ÉTUDE: L'étude visait à caractériser et à définir la prévalence de troubles respiratoires du sommeil, de mouvements involontaires des membres, d'effets sur la qualité du sommeil et de symptômes dépressifs chez les patients sous DPA en comparaison avec la prévalence de ces mêmes paramètres chez les patients souffrant d'insuffisance rénale chronique (eDFG à ≤44 ml/min/1.73 m2) et chez les patients sous hémodialyse. CADRE ET TYPE D'ÉTUDE: Il s'agit d'une étude transversale descriptive qui s'est tenue dans l'ouest de la Pennsylvanie (États-Unis) entre avril 2004 et juillet 2009. Le recrutement des participants s'est effectué au sein des patients en consultation externe des cliniques de néphrologie, dans les centres de dialyses régionaux et au Thomas E. Starzl Transplant Institute. PARTICIPANTS: Un total de 186 patients a pris part à cette étude, parmi lesquels on comptait 22 patients sous traitement par DPA, 89 patients en situation d'insuffisance rénale chronique et 75 patients sous hémodialyse. MESURES: La cueillette des données incluait des mesures de polysomnographie effectuées à domicile par les patients ainsi que les réponses fournies à deux questionnaires : le Pittsburgh Sleep Quality Index (PSQI) et le Patient Health Questionnaire-9 (PHQ-9). RÉSULTATS: La cohorte de patients sous DPA se constituait en majorité de femmes (72,3 %) de 37,5 ans d'âge médian et dont l'indice de masse corporelle (IMC) se situait en moyenne à 23,8 kg/m2. Les analyses univariées ont démontré un index apnées-hypopnées inférieur de 12,2 points (p = 0,0008) et un plus faible pourcentage de troubles du sommeil avec hypoxémie nocturne par 2,7 points (p = 0,01) chez les patients sous DPA en comparaison avec les patients sous hémodialyse. Les analyses multivariées, après correction en fonction de l'âge, du sexe, de l'origine ethnique et de l'IMC des participants, ont quant à elles démontré que les patients sous DPA et sous hémodialyse ont obtenu des résultats plus élevés au questionnaire PSQI que les patients souffrant d'insuffisance rénale chronique, avec des moyennes supérieures de 2,54 et 2,22 points respectivement (p = 0,005). La comparaison entre les différents groupes en ce qui concerne les autres paramètres mesurés n'a pas atteint le degré de signification statistique. LIMITES DE L'ÉTUDE: Les données recueillies au cours de cette étude concernent un faible échantillon de patients sous DPA. De plus, en raison des grandes différences notées dans les données cliniques et démographiques des trois groupes de patients qui la constituaient, la cohorte étudiée manquait d'uniformité. CONCLUSIONS: En dépit des différences notées dans les analyses univariées et de l'obligation d'effectuer des corrections dans les analyses multivariées, les résultats montrent que les patients sous DPA ne présentent pas de différences significatives pour les paramètres de sommeil mesurés. Les patients sous DPA maintiennent des paramètres et une architecture de sommeil semblables à ceux mesurés chez les patients sous traitement par hémodialyse : la qualité du sommeil demeure faible, mais ils ne présentent pas plus de symptômes de dépression. Des études de plus grande envergure sont requises afin de mieux définir l'influence de la DPA sur la qualité du sommeil et sur l'humeur des patients qui la pratiquent.

Mucoepidermoid carcinoma of the parotid gland: the Mayo clinic experience.

OBJECTIVE: To determine clinical and histopathologic features of mucoepidermoid carcinoma of the parotid gland, specifically, the relation of tumor stage and grade and treatment type with clinical outcome. DESIGN: Retrospective clinical and histopathologic review. SETTING: Tertiary care medical center. PATIENTS: From 1940 to 1994, 128 patients were treated at our institution for parotid mucoepidermoid carcinoma. Eighty-nine of these patients had their first treatment at our institution; these cases were chosen for retrospective clinical and histopathologic review. INTERVENTION: A head and neck pathologist independently reviewed the pathology specimens. MAIN OUTCOME MEASURES: Age, symptoms, stage, treatment type, tumor grade, pathological features, disease progression, and survival. RESULTS: Results of clinical staging were: T1 in 56 patients, T2 in 13, T3 in 1, T4 in 15, N0 in 85, N1 in 2, and N2 in 2. No patient had N3 or M1 disease. All patients underwent parotidectomy with or without neck dissection. Seven patients received postoperative radiotherapy. Tumor grade was low in 43 patients (48%), intermediate in 40 (45%), and high in 6 (7%). Only 5 patients had disease progression (local recurrence in 4, regional recurrence in 4, and distant recurrence in 2). At latest follow-up (mean follow-up, 14.7 years), 64 patients were alive without disease, 1 was alive with disease, 2 had died of mucoepidermoid carcinoma, and 22 had died of other causes. The Kaplan-Meier estimated cancer-specific survival rates at 5, 15, and 25 years were 98.8%, 97.4%, and 97.4%, respectively. CONCLUSIONS: In our study, tumor grade and stage appeared to be less important than previously described. With adequate parotidectomy and appropriate neck dissection, patients with mucoepidermoid carcinoma of the parotid gland appear to do well, with few recurrences.