Overview Measures of association quantify relationships between variables In medicine and public health, measures of association most often quantify the association of exposure with disease Measures of association can be presented and framed in different ways for diverse purposes 2x2 tables can be helpful in calculating these measures login to view 1 more bullet Relative Risk, Odds Ratio,Attributable Risk, and Absolute Risk Reduction Relative risk (RR) login to view 9 more bullets Odds ratio (OR) login to view 11 more bullets Attributable risk (AR) login to view 1 more bullet Attributable risk percent (ARP) login to view 1 more bullet Absolute risk reduction (ARR) login to view 3 more bullets Number Needed to Treat and Number Needed to Harm Number needed to treat (NNT) login to view 8 more bullets Population-Level Measures of Association Used to make public health decisions and allocate resources Population attributable risk (PAR) login to view 6 more bullets Population attributable risk percent (PAR%) login to view 3 more bullets