95,139 results match your criteria survival proportional


Regression analysis of arbitrarily censored survival data under the proportional odds model.

Stat Med 2021 Apr 21. Epub 2021 Apr 21.

Department of Statistics, University of South Carolina, Columbia, South Carolina, USA.

Arbitrarily censored data are referred to as the survival data that contain a mixture of exactly observed, left-censored, interval-censored, and right-censored observations. Existing research work on regression analysis on arbitrarily censored data is relatively sparse and mainly focused on the proportional hazards model and the accelerated failure time model. This article studies the proportional odds (PO) model and proposes a novel estimation approach through an expectation-maximization (EM) algorithm for analyzing such data. Read More

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Hypomagnesemia Is a Risk Factor for Cardiovascular Disease- and Noncardiovascular Disease-Related Mortality in Peritoneal Dialysis Patients.

Blood Purif 2021 Apr 21:1-8. Epub 2021 Apr 21.

Department of Nephrology, Jiujiang No. 1 People's Hospital, Jiujiang, China.

Purpose: Recent research has shown that hypomagnesemia is associated with increased all-cause mortality in hemodialysis patients. However, the relationship between the long-term prognosis of peritoneal dialysis (PD) and the study is not yet clear. This study will analyze the effects of hypomagnesemia on all-cause, cardiovascular diseases (CVD), and non-CVD mortality in PD patients. Read More

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Association of bezafibrate with transplant-free survival in patients with primary biliary cholangitis.

J Hepatol 2021 Apr 18. Epub 2021 Apr 18.

Reference Center for Inflammatory Biliary Diseases and Autoimmune Hepatitis (MIVB-H), Saint-Antoine Hospital, European Reference (ERN) Network Rare-Liver, Saint-Antoine Research Center (CRSA), Assistance Publique - Hôpitaux de Paris (APHP), Sorbonne University, Paris, France. Electronic address:

Background & Aims: Beneficial effect of bezafibrate (BZF) on symptoms and biochemical features of primary biliary cholangitis (PBC) with incomplete response to ursodeoxycholic acid (UDCA) has been reported but long-term efficacy on survival remains unknown. In Japan, BZF has been used as a de facto second-line therapy for PBC since 2000. Herein, we compared the survival rates between patients treated with and those without BZF in a large nationwide Japanese PBC cohort. Read More

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Symptoms of anxiety after heart transplantation and their association with mortality: a secondary analysis.

Clin Transplant 2021 Apr 21:e14323. Epub 2021 Apr 21.

Department of Cardiology, Oslo University Hospital - Rikshospitalet, Oslo, Norway.

Background: Few studies, with inconclusive results, have examined the association of anxiety with mortality after heart transplantation (HTx). We examined whether anxiety symptoms, measured several years after HTx, are associated with increased mortality during long-term follow-up.

Methods: Anxiety symptoms were measured with the anxiety subscale of the Symptom Checklist-90-R (SCL-90-R) in 142 HTx recipients at a mean of 5. Read More

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Is birth out-of-hospital associated with mortality and morbidity by seven years of age?

PLoS One 2021 21;16(4):e0250163. Epub 2021 Apr 21.

Department of Pediatrics, Tampere University Hospital, Tampere, Finland.

Background And Aims: Compared to in-hospital births, the long-term outcome of children born out-of-hospital, planned or unplanned, is poorly studied. This study aimed to examine mortality and morbidity by seven years of age in children born out-of-hospital compared to those born in-hospital.

Methods: This study was registered retrospectively and included 790 136 children born in Finland between 1996 and 2013. Read More

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A Study on Survival Scenario of COVID-19 patients in India: An Application of Survival Analysis on patient demographics.

JMIR Form Res 2021 Apr 13. Epub 2021 Apr 13.

International Institute for Population Sciences, Govandi Station Road, Deonar, Mumbai, IN.

Background: The study of transmission dynamics of COVID-19, have depicted the rate, patterns and predictions of the pandemic cases. In order to combat the disease transmission in India, the Government had declared lockdown on the 25th of March. Even after a strict lockdown nationwide, the cases are increasing and have crossed 4. Read More

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In neonatal onset surgical short bowel syndrome survival is high, and enteral autonomy is related to residual bowel length.

JPEN J Parenter Enteral Nutr 2021 Apr 21. Epub 2021 Apr 21.

Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA.

Background: In an era of improved management and treatment options, this study aims to describe the long-term outcomes and factors predictive of outcomes of neonatal-onset intestinal failure (IF) due to surgical short bowel syndrome (SBS).

Materials And Methods: Retrospective, single-center cohort study of infants born between January 2011 and December 2018 with inclusion criteria: <44 weeks postmenstrual age at SBS diagnosis, <28 days on admission, parenteral nutrition dependence >60 days, and documented intestinal resection. Primary outcomes included survival and achievement of enteral autonomy (EA). Read More

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Feature screening with large scale and high dimensional survival data.

Biometrics 2021 Apr 21. Epub 2021 Apr 21.

Department of Statistics, Texas A&M University, 3143 TAMU, College Station, TX, 77843-3143.

Data with a huge size present great challenges in modeling, inferences and computation. In handling big data, much attention has been directed to settings with "large p small n", and relatively less work has been done to address problems with p and n being both large, though data with such a feature have now become more accessible than before, where p represent the number of variables and n stands for the sample size. The big volume of data does not automatically ensure good quality of inferences because a large number of unimportant variables may be collected in the process of gathering informative variables. Read More

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Associations of dietary and lifestyle oxidative balance scores with mortality risk among older women: the Iowa Women's Health Study.

Eur J Nutr 2021 Apr 21. Epub 2021 Apr 21.

Department of Epidemiology, Rollins School of Public Health, Emory University, Mailstop 1518-002-3BB, 1518 Clifton Road NE, Atlanta, GA, 30322, USA.

Purpose: Substantial basic science evidence suggests that oxidative stress may play a role in aging-related health outcomes, including cardiovascular diseases (CVD) and cancer, and oxidative stress markers were linked with all-cause and cause-specific mortality in epidemiologic studies. However, the associations of many individual dietary and lifestyle anti-/pro-oxidant exposures with mortality are inconsistent. Oxidative balance scores (OBS) that incorporated multiple dietary and lifestyle factors were previously developed and reported to reflect the collective oxidative effects of multiple exposures. Read More

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Assessment of morphological CT imaging features for the prediction of risk stratification, mutations, and prognosis of gastrointestinal stromal tumors.

Eur Radiol 2021 Apr 21. Epub 2021 Apr 21.

Department of Biomedicine, Neuroscience and Advanced Diagnostics (BiND), University of Palermo, Via del Vespro 129, 90127, Palermo, Italy.

Objectives: To investigate the correlation between CT imaging features and risk stratification of gastrointestinal stromal tumors (GISTs), prediction of mutation status, and prognosis.

Methods: This retrospective dual-institution study included patients with pathologically proven GISTs meeting the following criteria: (i) preoperative contrast-enhanced CT performed between 2008 and 2019; (ii) no treatments before imaging; (iii) available pathological analysis. Tumor risk stratification was determined according to the National Institutes of Health (NIH) 2008 criteria. Read More

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Association of frailty and pre-frailty with increased risk of mortality among older Canadians.

Health Rep 2021 Apr;32(4):15-26

Health Analysis Division, Statistics Canada, Ottawa, Ontario.

Background: Frailty is a complex syndrome that is associated with aging but not synonymous with the normal aging process. It has been associated with all-cause mortality, but less is known about frailty and mortality from specific causes.

Data And Methods: Data from the 2013 and 2014 Canadian Community Health Survey (CCHS) linked to the Canadian Vital Statistics - Death Database were used to estimate the prevalence of frailty among Canadians aged 65 or older. Read More

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Primary esophageal non-Hodgkin's lymphoma: demographics, clinical characteristics, histopathologic types, and survival in 179 patients from the SEER program and systematic review of the literature.

Esophagus 2021 Apr 20. Epub 2021 Apr 20.

Public Health and Epidemiological Studies Group, Cardiovascular Foundation of Colombia, Floridablanca, Colombia.

Background: The most frequent site for the extranodal appearance of primary non-Hodgkin's lymphomas (NHL) is the gastrointestinal (G.I.) tract. Read More

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The Prognostic Significance of Sarcopenia and the Neutrophil-to-Lymphocyte Ratio in Elderly Patients with Esophageal Squamous Cell Carcinoma.

Cancer Manag Res 2021 13;13:3209-3218. Epub 2021 Apr 13.

Department of Thoracic Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China.

Objective: To evaluate the correlation between systemic inflammation markers and sarcopenia in elderly patients with esophageal squamous cell carcinoma (ESCC) and their prognostic value.

Materials And Methods: The clinical data of 121 elderly patients with ESCC were collected. The skeletal muscle area at the level of the third lumbar vertebrae (L3) was measured by computed tomography (CT), and then the skeletal muscle index (SMI) was calculated. Read More

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[Semiquantitative parameters of F-FDG PET/CT, gene mutation states of epidermal growth factor receptor and anaplastic lymphoma kinase in prognosis evaluation of patients with lung adenocarcinoma].

Beijing Da Xue Xue Bao Yi Xue Ban 2020 Oct;53(2):246-254

Department of Nuclear Medicine, Peking University First Hospital, Beijing 100034, China.

Objective: To explore the valuable predictors for evaluating progression-free survival (PFS) in patients with lung adenocarcinoma, we analyzed the potential roles of standardized uptake value (SUV)-derived parameters from F-FDG PET/CT, combining with the gene mutation states of epidermal growth factor receptor () and anaplastic lymphoma kinase (), and other clinical characteristics.

Methods: Data of 84 lung adenocarcinoma patients pre-treated, who underwent F-FDG PET/CT scans, gene mutations test, rearrangement assay and other relative tests, were retrospectively collected. Then a series of clinical parameters including / mutation status and SUV-derived features [maximum standardized uptake value (SUVmax), average of standardized uptake value (SUVmean), metabolic tumor volume (MTV), and total lesion glycolysis (TLG)] were evaluated. Read More

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October 2020

Determinants of neonatal, post-neonatal and child mortality in Afghanistan using frailty models.

Pediatr Res 2021 Apr 20. Epub 2021 Apr 20.

Department of Mathematics and Statistics, The University of the West Indies, St. Augustine, Trinidad and Tobago.

Background: Afghanistan has one of the highest under-five mortality rates in South Asia, 70.4 per 1000 live births. Determinants need to be identified to reduce this rate. Read More

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Body mass index linked to short-term and long-term all-cause mortality in patients with acute myocardial infarction.

Postgrad Med J 2021 Apr 20. Epub 2021 Apr 20.

Clinical Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China

Purposes Of Study: This study aimed to elucidate the relationship between obesity and short-term and long-term mortality in patients with acute myocardial infarction (AMI) by analysing the body mass index (BMI).

Study Design: A retrospective cohort study was performed on adult intensive care unit (ICU) patients with AMI in the Medical Information Mart for Intensive Care III database. The WHO BMI classification was used in the study. Read More

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Underweight rather than adiposity is an important predictor of death in rural Chinese adults: a cohort study.

J Epidemiol Community Health 2021 Apr 20. Epub 2021 Apr 20.

School of Public Health,NHC Key Laboratory of Health Technology Assessment, Key Laboratory of Public Health Safety, Fudan University, Shanghai, China

Background: To assess the associations of body mass index (BMI) with all-cause and cause-specific mortalities among rural Chinese.

Methods: A prospective study of 28 895 individuals was conducted from 2006 to 2014 in rural Deqing, China. Height and weight were measured. Read More

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Independent and joint effects of testosterone replacement therapy and statins use on the risk of prostate cancer among White, Black and Hispanic men.

Cancer Prev Res (Phila) 2021 Apr 20. Epub 2021 Apr 20.

University of Texas McGovern Medical School.

The associations of testosterone therapy (TTh) and statins use with prostate cancer (PCa) remain conflicted. However, the joint effects of TTh and statins use on the incidence of PCa, stage and grade at diagnosis, and PCa-specific mortality (PCSM) have not been studied. We identified White (N=74181), Black (N=9157) and Hispanic (N=3313) men diagnosed with PCa in SEER-Medicare 2007-2016. Read More

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Clinical and pathological risk factors for worse stage and mortality of eyelid and periocular squamous cell carcinoma.

Br J Ophthalmol 2021 Apr 20. Epub 2021 Apr 20.

Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China

Background: The clinical and pathological risk factors for worse T stage and prognosis in eyelid and periocular squamous cell carcinomas (SCCs) remain unclear. P63 was reported to predict a worse prognosis in other SCCs; however, this correlation was not validated in eyelid and periocular SCCs.

Methods: We reported on a retrospective case series of 85 consecutive patients with eyelid and periocular SCCs from 1995 to 2019. Read More

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Active behavior of triple-negative breast cancer with adipose tissue invasion: a single center and retrospective review.

BMC Cancer 2021 Apr 20;21(1):434. Epub 2021 Apr 20.

Department of Urology (Chair of the Board of Directors), Seisyukai Social Medical Corporation, Fukuoka, Japan.

Background: Interactions between adipocyte and breast cancer (BC) cells have yet to be fully elucidated. Here we investigated the prognostic impact of marginal adipose tissue invasion in both luminal breast cancer (HR+/HER2-) and triple-negative breast cancer (TNBC) (HR-/HER2-).

Methods: A total of 735 patients with early-stage invasive BC (1999-2014) were retrospectively registered. Read More

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Risk prediction in medically treated chronic thromboembolic pulmonary hypertension.

BMC Pulm Med 2021 Apr 20;21(1):128. Epub 2021 Apr 20.

Department of Pulmonary Vascular Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167, Beilishi Road, Xicheng District, Beijing, 100037, China.

Background: At present, there is no generally accepted comprehensive prognostic risk prediction model for medically treated chronic thromboembolic pulmonary hypertension (CTEPH) patients.

Methods: Consecutive medically treated CTEPH patients were enrolled in a national multicenter prospective registry study from August 2009 to July 2018. A multivariable Cox proportional hazards model was utilized to derive the prognostic model, and a simplified risk score was created thereafter. Read More

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The characteristics of laboratory tests at admission and the risk factors for adverse clinical outcomes of severe and critical COVID-19 patients.

BMC Infect Dis 2021 Apr 20;21(1):371. Epub 2021 Apr 20.

Hubei Provincial Academy of Tranditional Chinese Medicine, Wuhan, China.

Background: The current coronavirus disease 2019 (COVID-19) is a public health emergency. In this study, we aimed to evaluate the risk factors for mortality in severe and critical COVID-19 patients.

Methods: We performed a retrospective study of patients diagnosed with severe and critical COVID-19 from four hospitals in Wuhan, China, by evaluating the clinical characteristics and laboratory results, and using Cox proportional hazards model to assess the risk factors involved in disease progression. Read More

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Interpregnancy Body Mass Index Change and Offspring Mortality Risk following the Second Pregnancy.

Am J Perinatol 2021 Apr 20. Epub 2021 Apr 20.

Department of Medicine, University Diabetes and Endocrinology Center, University of Utah, Salt Lake City, Utah.

Objective:  The aim of the study is to examine the impact of maternal interpregnancy body mass index (BMI) change on subsequent offspring mortality risk.

Study Design:  This is a retrospective cohort study of women who had two consecutive live singleton deliveries of at least 20 weeks' gestation from the Utah Population Database. Our exposure was defined as interpregnancy BMI change from the date of first delivery to the conception date of subsequent pregnancy. Read More

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Survival outcomes after breast-conserving therapy compared with mastectomy for patients with early-stage metaplastic breast cancer: a population-based study of 2412 patients.

Breast 2021 Apr 1;58:10-17. Epub 2021 Apr 1.

Department of Breast Cancer, Cancer Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China; Shantou University Medical College, Shantou, 515041, China. Electronic address:

Background: Previous studies revealed that patients with early-stage metaplastic breast cancer (MBC) underwent mastectomy more often than breast-conserving therapy (BCT) mainly due to the larger tumor size. This study was performed to compare the survival outcomes following BCT versus mastectomy for patients with early-stage MBC.

Methods: Surveillance, Epidemiology, and End Results (SEER) database was used to identify women diagnosed with early-stage MBC (T1-3N0-3M0) between 2001 and 2016, who were treated with either BCT or mastectomy. Read More

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Adverse associations of sedentary behavior with cancer incidence and all-cause mortality: A prospective cohort study: Sedentary behavior, cancer and mortality.

J Sport Health Sci 2021 Apr 17. Epub 2021 Apr 17.

Key Laboratory of Cardiovascular Epidemiology, Chinese Academy of Medical Sciences, Beijing 100037, China; Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address:

Background: Inconsistent results have been reported in developed countries for relationships between sedentary behavior and cancer incidence and mortality, but evidence from the Chinese population is scarce. This study aimed to investigate such relationships in large Chinese population-based prospective cohorts and to explore the joint effect and interaction of sedentary behavior and moderate-to-vigorous physical activity (MVPA) on these relationships.

Methods: We included 95,319 Chinese adults without cancer from 3 large cohorts and assessed their sedentary behavior and physical activity with a unified questionnaire. Read More

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A matter of size? Health-related quality of life after radical prostatectomy for patients with giant prostates.

Prostate 2021 Jun;81(8):443-451

Department of Urology, University Hospital Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany.

Background: Evidence regarding the impact of giant prostate volume (PV) on outcome after radical prostatectomy (RP) is controversial with a lack of evidence on the impact of PV on health-related quality of life (HRQOL). We aimed to assess the impact of giant PV on HRQOL and functional outcomes for men with prostate cancer (PC) undergoing RP.

Methods: Giant PV was defined based on the 95th percentile of PV measured by specimen weight of 3929 patients that underwent RP between 2013 and 2018 in a large tertiary care center. Read More

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Prognostic Value of Apparent Diffusion Coefficient in Oropharyngeal Carcinoma.

Clin Neuroradiol 2021 Apr 20. Epub 2021 Apr 20.

Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, Haartmaninkatu 4, 00029 HUS, Helsinki, Finland.

Purpose: To investigate clinical and radiological factors predicting worse outcome after (chemo)radiotherapy ([C]RT) in oropharyngeal squamous cell carcinoma (OPSCC) with a focus on apparent diffusion coefficient (ADC).

Methods: This retrospective study included 67 OPSCC patients, treated with (C)RT with curative intent and diagnosed during 2013-2017. Human papilloma virus (HPV) association was detected with p16 immunohistochemistry. Read More

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Associations between loneliness and acute hospitalisation outcomes among patients receiving mental healthcare in South London: a retrospective cohort study.

Soc Psychiatry Psychiatr Epidemiol 2021 Apr 20. Epub 2021 Apr 20.

Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience (King's College London), De Crespigny Park, Box 92, London, SE5 8AF, UK.

Purpose: It is well known that loneliness can worsen physical and mental health outcomes, but there is a dearth of research on the impact of loneliness in populations receiving mental healthcare. This study aimed to investigate cross-sectional correlates of loneliness among such patients and longitudinal risk for acute general hospitalisations.

Method: A retrospective observational study was conducted on the data from patients aged 18 + receiving assessment/care at a large mental healthcare provider in South London. Read More

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Monocyte-to-High-Density Lipoprotein Cholesterol Ratio Is Independently Associated With All-Cause Mortality in Deceased Donor Kidney Transplant Recipients.

Exp Clin Transplant 2021 Apr 16. Epub 2021 Apr 16.

From the Department of Urology, Faculty of Medicine, Uludag University, Bursa, Turkey.

Objectives: The primary objective of this study was to evaluate the impact of monocyte-to-high-density lipoprotein cholesterol ratio on all-cause mortality in deceased donor kidney transplant recipients.

Materials And Methods: This was a retrospective observational study in which all deceased donor kidney transplant recipients were included. Relevant data for analyses included clinical and demographic features, laboratory values, number of HLA matches, occurrence of delayed graft function, cold ischemia time, and survival status. Read More

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Chronic use of Renin-Angiotensin-Aldosterone-System blockers and mortality in COVID-19: a multicenter prospective cohort and literature review.

Fundam Clin Pharmacol 2021 Apr 20. Epub 2021 Apr 20.

AP-HP, Hôpital Bichat, Service de Physiologie rénale, F-75018, Paris, France.

Aims: The role of renin-angiotensin-aldosterone system (RAAS) blockers on the course of coronavirus disease 2019 (COVID-19) is debated. We assessed the association between chronic use of RAAS blockers and mortality among inpatients with COVID-19, and explored reasons for discrepancies in the literature.

Methods And Results: We included adult hypertensive patients from a prospective nationwide cohort of 3512 inpatients with COVID-19 up to June 30, 2020. Read More

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