نتایج جستجو برای: nested case control

تعداد نتایج: 2563817  

Journal: :Occupational and Environmental Medicine 1999

Journal: :Pharmacoepidemiology and Drug Safety 2021

Background Statins exert pleiotropic anti-inflammatory effects and may prevent diverticular disease. However, the association remains poorly understood with previous studies obtaining conflicting results. Aims To examine effect of statin on subsequent risk Methods We conducted a nested case–control study in Denmark among respondents (>18 years) 2010 or 2013 Danish National Health Survey. Among ...

Journal: :BMC Medical Research Methodology 2005
Vidal Essebag Robert W Platt Michal Abrahamowicz Louise Pilote

BACKGROUND Epidemiological studies of exposures that vary with time require an additional level of methodological complexity to account for the time-dependence of exposure. This study compares a nested case-control approach for the study of time-dependent exposure with cohort analysis using Cox regression including time-dependent covariates. METHODS A cohort of 1340 subjects with four fixed a...

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