Incidence is calculated by-: (A) Retrospective study, (B) Prospective study, (C) Cross sectional study, (D) Random study
Answer is B. Ans. is 'b' i.e., Prospective study o Incidence rate is measured by cohort study, also known as prospective study.Epidemiological studyParameter obtainedo Case control studyOdds ratioo Cohort studyIncidence rateRelative riskAttributable riskPopulation attributable risko Cross - sectional studyPrevalenceo Ecological studyGroup characteristics