Preference of epidemiological studies for establishing causality:-

A. RCT > Retrospective coho > Prospective coho > Case control > Cross sectional

B. RCT > Prospective coho > Retrospective coho > Case control > Cross sectional

C. RCT > Prospective coho >Retrospective coho > Cross sectional > Case control

D. RCT > Retrospective coho > Prospective coho > Cross sectional > Case control

Correct Answer: RCT > Retrospective coho > Prospective coho > Case control > Cross sectional

Description: Preference of epidemiological studies for establishing causality:- Double blind RCT > Retrospective coho > Prospective coho > Case control > cross sectional > Ecological study.

Category: Social & Preventive Medicine

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