Social & Preventive Medicine Case control study method has following three distinct features. Select inappropriate one A Both exposure and outcome have occurred before the sta of the study B Unit of study is group rather than individual C The study proceeds backward from effect to cause D It uses a control or comparison group to suppo or refute an interference 💡 Explanation Case control study method has following three distinct features. Select inappropriate one ✓ Correct Answer: B. Unit of study is group rather than individual