HSS 2381 Lecture Notes - Lecture 5: Colorectal Cancer, Odds Ratio, Relative Risk

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 2381
• Professor: Kerry- Ann Hogan

Document Summary

Choose most appropriate statistic to compute by level of measurement of variable and the . Three main measures of association relative risk, odds ratio, absolute risk. Relative risk ratio of probability of an event occurring (i. e developing a disease, being injured) in an exposed group to the probability of the event occurring in a comparison, non-exposed group. 5% of ppl will get bowel cancer (absolute risk); ppl who eat bacon sandwhiches everyday will get. 20% increase chance of getting bowel cancer (relative risk: if 100 ppl, 5 ppl will get bowel cacncer, 5% x 20% would mean 1 more person will get bowel cancer. Absolute risk risk of developing disease over a time period (independent of risk factors); it"s the proportion of ppl who experience the undesirable outcome. Estimates the magnitude of the effect of the exposure on the incidence.