| Re: URGENT QUESTION: Missing child nutrition values in Uganda DHS2016 [message #22427 is a reply to message #22417] |
Thu, 11 March 2021 12:05   |
jfleuret
Messages: 3
Registered: May 2019
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Dear Sarika,
Yes, because in the 2016 UDHS anthropometry data were not collected in households where the DV module was implemented, there is no link between those variables.
Surveys often have subsamples (quite often for biomarkers and, to the best of my knowledge, always for DV). While the DV subsampling also has to do with wanting to increase confidentiality, subsampling is generally recognized as a tool to reduce survey burden and increase the feasibility of survey implementation - it's not a specific decision to avoid collecting anthro in DV households.
I encourage you to check Chapter 1 of the Final Report for any survey in which you are interested to understand whether that survey collected all data in all households or had any subsampling (different biomarkers in different households, different questionnaires in different households).
Subsampling decisions are survey-specific and are taken during survey design by the survey implementing organization & steering committee. Precedents are not set in stone.
I can't think of any way to extrapolate from the children with anthro data (but no mother DV data) to children without anthro data (but yes mother DV data), although I am not a statistician/expert in this domain.
Please don't hesitate to let us know of any other questions & good luck with your PhD.
Best,
Julia
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