This course will primarily introduce participants to rates, usual measures of disease occurrence and exposure effect in longitudinal studies. Survival analysis and cox proportional hazards regression modeling will be the main statistical focus using person-time data. Graphical displays, modeling time-varying covariates, analyzing survival data with competing outcomes will be covered here. A preparatory STATA session will be presented for those who are new to STATA. Emphasis will be placed on effective statistical codes and use of clean and informative programming. STATA will be used to manage, manipulate and analyze person-time data. Interpretation of outputs and producing publication ready results will be covered. Analysis will be based on both randomized clinical trials and cohort studies. Specialized functions such as landmark analysis, stratified cox models and competing risk models will also be included. Concepts regarding multi-state analysis will be presented and tutorials using R will be provided.