| Re: analysing antenatal care between 2017 & 2022 datasets [message #28568 is a reply to message #28541] |
Wed, 31 January 2024 09:39   |
Janet-DHS
Messages: 888
Registered: April 2022
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Senior Member |
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Following is a response from DHS staff member, Tom Pullum:
You did not say what country you are working with. Whatever country it is, the 2017 and 2022 surveys are independent cross-sections and you cannot to a case-by-case merge. You can append one to the other, but I don't think much will be gained, because the 2022 survey (as a DHS-8 survey) includes a pregnancy history, not just a birth history (plus calendar).
The same information about ANC is available in both surveys.
If you want to make your results from the two surveys more comparable, then yes, you can use the same time interval (the last 24 months, with p19<24 or b19<24) for both of them. But you have to be careful with births in one survey and pregnancies in the other. DHS-8 surveys have an important variable for each pregnancy, p32. If you select pregnancies with p32=1 then you will have live births, corresponding with birth histories in pre-DHS-8 surveys.
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