Social & Preventive Medicine 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 💡 Explanation Preference of epidemiological studies for establishing causality:- ✓ Correct Answer: A. RCT > Retrospective coho > Prospective coho > Case control > Cross sectional