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Home » Topics » Water and Sanitation » Are the area clusters for one country the same across years?
Are the area clusters for one country the same across years? [message #28732] Thu, 29 February 2024 20:57 Go to next message
andrew49@stanford.edu is currently offline  andrew49@stanford.edu
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Registered: February 2024
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I understand that area clusters aren't identified for privacy reasons, but I wanted to double check that they are still uniform across years in DHS surveys (looking at Malawi specifically.)
Re: Are the area clusters for one country the same across years? [message #28771 is a reply to message #28732] Wed, 06 March 2024 16:17 Go to previous messageGo to next message
Janet-DHS is currently offline  Janet-DHS
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Registered: April 2022
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Following is a response from DHS staff member, Tom Pullum:

The methodology for sampling clusters from the sampling frame is consistent across surveys, but successive surveys in the same country have different samples of clusters, households, and respondents. There is no continuity in the actual sample.
Re: Are the area clusters for one country the same across years? [message #31493 is a reply to message #28732] Thu, 09 October 2025 04:04 Go to previous message
VincentMcCarthy is currently offline  VincentMcCarthy
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Registered: October 2025
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You're right that DHS area clusters aren't identified for confidentiality reasons. However, they are generally consistent within each survey year--meaning the same cluster ID refers to the same geographic area across variables within that dataset. That said, cluster IDs are not meant to be comparable across different survey years (e.g., 2010 vs. 2016 Malawi DHS), since the sampling design is independent for each round.
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