EPID 404 Midterm Exam Study Topic Areas of Focus 1. The impact of study design on which measures can be calculated 2. Estimating and interpreting measures of occurrence (prevalence, incidence, odds) and corresponding measures of association (prevalence ratio, relative risk, odds ratio, prevalence difference, risk difference). 3. Assessing additive and multiplicative interaction from stratified analysis using both methods covered in class: a) homogeneity of effects and b) joint and separate effects 4. Understanding and interpreting contingency tables and regression output in order to: a. Specifying the full model equation using beta coefficients and variable names b. Interpreting the meaning of beta coefficients and exponentiated beta coefficients (as applicable)