Environmental Health Perspectives, Vol. 102, Supplement 8: Biostatistics in the Study of Human Cancer (Nov., 1994), pp. 47-51 (5 pages) A stratified version of nested case-control sampling which we ...

Observational studies of drug effects conducted using health care mega-databases often involve large cohorts with multiple time-varying exposures and covariates. These present formidable technical ...

We conducted a multicenter, nested case–control study of Alzheimer’s disease biomarkers in cognitively normal participants who were enrolled in the China Cognition and Aging Study from January ...