Question:
A new community intervention is initiated to reduce prenatal sepsis. Researchers allocated 20 PHCs to receive standard care and 20 PHCs to receive a community-based intervention. What type of study design is this?
A new community intervention is initiated to reduce prenatal sepsis. Researchers allocated 20 PHCs to receive standard care and 20 PHCs to receive a community-based intervention. What type of study design is this?
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If groups like schools, villages or PHCs are randomized instead of individuals, it is a cluster-randomized trial.
Updated On: May 14, 2026
- Cross-sectional study
- Case-control study
- Quasi-experimental study
- Cluster-randomized control trial
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The Correct Option is D
Solution and Explanation
Concept:
In a cluster-randomized controlled trial, groups or clusters rather than individuals are allocated to intervention or control arms.
Step 1: Identify unit of allocation.
The allocation is done at the level of: \[ \text{PHCs} \] not individual patients.
Step 2: Identify comparison groups.
Some PHCs receive standard care and others receive community intervention.
Step 3: Name the study design.
Since clusters are allocated to intervention and control groups, it is: \[ \text{Cluster-randomized control trial} \]
Step 1: Identify unit of allocation.
The allocation is done at the level of: \[ \text{PHCs} \] not individual patients.
Step 2: Identify comparison groups.
Some PHCs receive standard care and others receive community intervention.
Step 3: Name the study design.
Since clusters are allocated to intervention and control groups, it is: \[ \text{Cluster-randomized control trial} \]
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