Sample size determination for case-control studies of chronic disease are often based on the simple 2 x 2 tabular cross-classification of exposure and disease, thereby ignoring stratification which ...

Woolson, Bean, and Rojas (1986, Biometrics 42, 927-932) present a simple approximation of sample size for Cochran's (1954, Biometrics 10, 417-451) test for detecting association between exposure and ...