| Re: Maternal height: strange patters [message #13915 is a reply to message #13914] |
Wed, 24 January 2018 17:42   |
Reduced-For(u)m
Messages: 292
Registered: March 2013
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Senior Member |
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A couple of possibilities, but not sure they'll help:
1 - has the reference population changed, so that you are weighting to a different representative population (maybe proportion rural/urban breakdown or something like that)?
2 - the age distribution of women is changing such that older cohorts (who were likely shorter) are somehow overtaking younger cohorts (even if time is moving forward)?
3 - are you perhaps picking up something in Rwanda that is a remnant of the genocide? I believe there is evidence that this led to decreases in height in children, and maybe continued through adulthood.
But I think the distribution of cohorts, the reference population you are weighting towards, or something horrible in the 1990's would all be possibilities.
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