Re: Appending multiple waves of the NFHS annd PSU codes [message #18242 is a reply to message #18169] |
Fri, 18 October 2019 13:42 |
Bridgette-DHS
Messages: 3199 Registered: February 2013
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Senior Member |
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Following is a response from DHS Research & Data Analysis Director, Tom Pullum:
These four surveys have much different dates and sample sizes. You can append them as repeated cross-sections in order to make comparisons but I think it would be meaningless to regard them as a single cross-section, if that is what you are suggesting. For example, a CPR using all cases in the four surveys would not have a clear reference population. In general, in DHS datasets, the PSU is given both as v001 and v021 (or hv001 and hv021). The two almost always agree exactly. However, if they do not agree exactly, use v021 (or hv021). For a small number of surveys, only one or the other is included, in which case you use the one that is included.
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