Radon is a well-established human carcinogen for which extensive data are available, extending into the range of exposures experienced by the general population. Mounting epidemiologic evidence on radon and lung cancer risk, now available from more than 20 different studies of underground miners and complementary laboratory findings, indicates that risks are linear in exposure without threshold...

A common goal of epidemiologic research is to study the association between a certain exposure and a certain outcome, while controlling for important covariates. This is often done by fitting a restricted mean model for the outcome, as in generalized linear models (GLMs) and in generalized estimating equations (GEEs). If the covariates are high-dimensional, then it may be difficult to well spec...

background: musculoskeletal disorders (msds) are common among employees throughout the world, particularly in high risk groups such as nurses. objective: to determine the prevalence of msds among nurses in a large hospital in ahwaz, southwestern iran, and to examine its correlation with gender, age, shift working, years at service and smoking. methods: using a self-reported questionnaire-based ...