MAST10011 Chapter Notes - Chapter 3: Odds Ratio, Venn Diagram, Relative Risk

• School: University of Melbourne
• Department: Mathematics and Statistics
• Course: MAST10011
• Professor: Dr Rheanna Mainzer

Document Summary

Probability tables a square version of a venn diagram. Contingency tables like a probability table but with integers rather than probabilities. Prevalence: the probability that an individual from a given population has disease d at a given point in time. Incidence: the rate at which a disease occurs. Relationship between a and b: if (cid:272) > (cid:1005), a a(cid:374)d b are positi(cid:448)ely related si(cid:374)(cid:272)e ea(cid:272)h i(cid:374)(cid:272)reases the (cid:272)ha(cid:374)(cid:272)e of the other o(cid:272)(cid:272)urri(cid:374)g, if (cid:272) < (cid:1005), a a(cid:374)d b are (cid:374)egati(cid:448)ely related. I(cid:374) that (cid:272)ase, ea(cid:272)h de(cid:272)reases the (cid:272)ha(cid:374)(cid:272)e of the other o(cid:272)(cid:272)urri(cid:374)g: if (cid:272) = (cid:1005), the(cid:374) a and b are independent. In that case, neither affects the chance of the other occurring: if a a(cid:374)d b are positi(cid:448)ely related, the(cid:374) a a(cid:374)d b(cid:859) are (cid:374)egati(cid:448)ely related. Compares the risk for the exposed an unexposed groups. The odds of the disease for the exposed group.