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Status:Closed    Asked:Sep 28, 2015 - 01:39 PM

BIRTHYR

I found "BIRTHYR" variable in USA ipumps, but could not find it in 1980 USA samples in international ipumps. How can I find it?

 
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BIRTHYR is IPUMS-USA is only available in 1% samples for 1900 and 1910. For other USA samples, BIRTHYR is a derived variable. In contrast, for IPUMS-International samples, BIRTHYR is a respondent reported variable. Therefore BIRTHYR in IPUMS-USA is not comparable with BIRTHYR in IPUMS-International.


To obtain the equivalent for IPUMS-USA 1980, subtract AGE from 1980--which is what is avialable from IPUMS-USA 1980.


Please see the IPUMS-USA BIRTHYR comparability discussion:

https://usa.ipums.org/usa-action/variables/BIRTHYR#comparability_section :

"Self-reported birth year is available only for the 1 percent samples for 1900 and 1910, in which it occasionally conflicts with self-reported AGE. IPUMS retains this original detail; users should exercise caution in these situations."


Compare with the comparability discussion for IPUMS-International:

https://international.ipums.org/international-action/variables/BIRTHYR#comparab
ility_section

"There are no comparability issues across samples, apart from differing bottom-codes (see the codes page), the universe difference for South Africa 2007, and the use of the Hijiri calendar instead of the Gregorian one in the Iran and Morocco samples. "



Source: https://usa.ipums.org/usa-action/vari...

 

Sep 29, 2015 - 02:08 AM

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