Question:easy
The unit of study in an ecological study is?
The unit of study in an ecological study is?
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Ecological studies correlate at group level - the unit is the population.
Updated On: Jun 24, 2026
- Population
- Patient
- Community
- Case
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The Correct Option is A
Solution and Explanation
Step 1: The key feature being tested is the level at which data are analysed in an ecological study design.
Step 2: Unlike studies that examine individual patients, ecological studies compare aggregate measures across whole populations or communities, correlating group-level exposure with group-level disease rates.
Step 3: Because the figures come from grouped or routinely published statistics, the investigator works with population averages rather than person-level information.
Step 4: Therefore the unit of study is the population, not the individual patient or case. \[\boxed{\text{Population}}\]
Step 2: Unlike studies that examine individual patients, ecological studies compare aggregate measures across whole populations or communities, correlating group-level exposure with group-level disease rates.
Step 3: Because the figures come from grouped or routinely published statistics, the investigator works with population averages rather than person-level information.
Step 4: Therefore the unit of study is the population, not the individual patient or case. \[\boxed{\text{Population}}\]
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