can you use an exposure rate to compare rate of events why use poission regression how do you compare rates of events when would you use standardized rate ratios what is the difference between a rate ratio and a pressure rate ratio in a retrospective cohort study why do you use standardized rate ratios? what is the standard rate of events for the study of the cohort study why use a regression method when comparing rate of events why use standardised rate ratio when do you use standardized rate ratios? why do you use a systematic review when you are comparing rates between an exposed and unexposed group? why use standardized rate ratio when and why use pos regression when used? when to use poission regression when to use a rate ratio how should rate ratios for retrospective cohort studies be used? how to compare rates of events for an unexposed population why are standardized rate ratios used when and why would you use standardized rate ratios for a study when should data based data be used for a retrospective cohort study why do we use a rate ratio