| Inconsistencies in heights between NFHS-3 NFHS-4 [message #24208] |
Tue, 15 March 2022 13:16  |
MaryH
Messages: 2
Registered: March 2022
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Hi all,
I was hoping someone might be able to help explain some inconsistencies we found when working on the 2005/06 and 2015/16 DHS Surveys for India (NFHS-3 and NFHS-4) with regards to average heights by birth cohort.
When plotting (weighted) national-level average heights for men (e.g. aged 23-50) for each year of birth for both waves, it is evident, that the line obtained using NFHS-4 data consistently lies 2 cm below the curve obtained from using data of the NFHS-3. For instance, the average height for people born in 1980 is 163.5cm according to NFHS-4 but 165cm according to the NFHS-3. Yet, the two lines do not converge for "younger" cohorts suggesting that this difference is unlikely to be driven by an age-effect (which usually sets in after age 40). Furthermore, height appears to be measured in the same way for both waves and the same cannot be observed for women's height. I unfortunately was not able to find any information in the corresponding DHS-reports or online. Does someone have an idea how this may come about?
Thank you in advance for your time and comment!
Mary
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