| missing data for children >36 months? [message #24749] |
Tue, 05 July 2022 15:24  |
arijitnandi
Messages: 1
Registered: July 2022
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I am using the NFHS-5 birth record file, IABR7AFL.DTA. For Section 5 (Child Immunizations and Health), the questionnaire indicates that responses are collected for all births in 2016 or later. However, for many variables information is available (non-missing) only for births/children <36 months of age. In other words, it's missing for all births>=36 months. This is the case for several variables I've looked at, including vitamin A (h34), iron supplements (h42), drug for parasites (h43), and health/immunization card (h1). In Stata, this is observed through a cross tab, such as "tab b19 `var' if b2>=2016, miss". This does not seem to be the case in NFHS-4, where this information is available for all children born in 2011 or later, even if they were >36 months of age at interview. Can you kindly clarify if there was a change in the sampling frame for this section between NFHS waves 4 and 5?
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