Results 51 to 60 of about 7,485,935 (361)
BMC Medical Research Methodology, 2013 BackgroundDesigns and analyses of clinical trials with a time-to-event outcome almost invariably rely on the hazard ratio to estimate the treatment effect and implicitly, therefore, on the proportional hazards assumption.
P. Royston, M. Parmar
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Epidemiological Analysis of COVID-19 Cases in Native Amazonian Communities from Peru
Epidemiologia, 2021 Despite early control measures, SARS-CoV-2 reached all regions of Peru during the first wave of the pandemic, including native communities of the Peruvian Amazon. Here, we aimed to describe the epidemiological situation of COVID-19 in the Amazonas region
Cecilia Pajuelo-Reyes +11 more
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Density Regression Based on Proportional Hazards Family [PDF]
, 2015 This paper develops a class of density regression models based on proportional hazards family, namely, Gamma transformation proportional hazard (Gt-PH) model . Exact inference for the regression parameters and hazard ratio is derived.
Bickel +13 more
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AtmosphereThe population of the Venafro Valley (Southern Italy) faces various type of air pollution problems (industrial facilities, traffic, and biomass combustion).
Elisa Bustaffa +5 more
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Bias in estimating the causal hazard ratio when using two-stage instrumental variable methods
Statistics in Medicine, 2015 Two‐stage instrumental variable methods are commonly used to estimate the causal effects of treatments on survival in the presence of measured and unmeasured confounding.
F. Wan +3 more
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Taiwanese Journal of PsychiatryObjectives: In this study, we intended to assess the risks of neurodevelopmental disorders (NDDs) in children of parents with bipolar disorder (BD) with a nationwide birth cohort, and to compare them with matched controls from the general community ...
Jhen-Wu Lai +3 more
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What Should We Consider Carefully When Performing Survival Analysis?
Clinical Pediatric Hematology-Oncology, 2019 The survival data and the survival analysis are the data and analysis methods used to study the probability of survival. The survival data consist of a period from the juncture of a start event to the juncture of the end event (occurrence event).
Sang Gyu Kwak, Eun Jin Choi
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Polygenic hazard score to guide screening for aggressive prostate cancer: development and validation in large scale cohorts. [PDF]
, 2018 OBJECTIVES: To develop and validate a genetic tool to predict age of onset of aggressive prostate cancer (PCa) and to guide decisions of who to screen and at what age.
core +2 more sources
Lower hazard ratio for death in women with cerebral hemorrhage
Acta Neurologica Scandinavica, 2015 The aim of the study was to clarify the hazard ratio for death within 30 days after stroke comparing women to men.
K. Shigematsu, Y. Watanabe, H. Nakano
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Frontiers in NutritionBackgroundPatients with rheumatoid arthritis (RA) face an increased mortality risk compared to the general population. While anemia commonly occurs in patients with RA and is associated with disease activity in established diseases, the prognostic value ...
I-Wen Chen +8 more
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