“The study of the distribution and determinants of health related states or events in specified population, and the application of this study to the prevention and control of health problems.” – (John M last 1988)
MCQS
1. Strength of association between exposure and outcome
a. Relative risk
b. Odds ratio
c. Positive predictive value
d. Risk factor
Ans is b
An odds ratio (OR) quantifies the strength of the association between two events, A and B