Question
Social And Preventive Medicine Question on Epidemiology
A researcher wanted to prove the relation between COPD and smoking. He collected patients records from government hospitals and records of cigarette sales from the finance and taxation department. This is an example of which study design:
A
Cross-sectional
B
Posological study
C
Ecological study
D
Operations research
Answer
Ecological study
Explanation
Solution
The correct option is (C): Ecological study.