Definition and background -- Design strategies in epidemiologic research -- Statistical association and cause-effect relationships -- Measures of disease frequency and association -- Descriptive studies -- Case-control studies -- Cohort studies -- Intervention studies -- Presentation an summarization of data -- Analysis of epidemiologic studies: evaluating the role of chance -- Analysis of epidemiologic studies: evaluating the role of bias -- Analysis of epidemiolgic studies: evaluating the role of confounding -- Screening