This free course is concerned with some of the statistical methods used in epidemiology and more widely in medical statistics. Section 1 introduces cohort studies in which individuals are classified according to their exposure and followed forward in time to evaluate disease outcomes. Section 2 looks at models for cohort studies. Section 3 introduces case-control studies in which individuals are selected according to their disease status and past exposures are then ascertained. Section 4 covers testing for no association in cohort studies and case-control studies.
Course learning outcomes
After studying this course, you should be able to:
estimate relative risks and odds ratios using data from a cohort study
estimate odds ratios using data from a case-control study
calculate and interpret confidence intervals for the relative risk and odds ratio
test for no association using the chi-squared test
interpret the results of a chi-squared test for no association and Fisher’s exact test.