| Sex ratio at 2nd birth order [message #27350] |
Mon, 24 July 2023 13:36  |
Kanika
Messages: 8
Registered: February 2023
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Member |
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Hello,
I am using DFHS (2019-21) and trying to calculate sex ratio at birth at the 2nd birth order conditional on the probability that a female was born in the 1st birth order. Can anyone please help me with the code in STATA?
Thank you,
Kanika
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| Re: Sex ratio at 2nd birth order [message #27354 is a reply to message #27351] |
Tue, 25 July 2023 13:04  |
Bridgette-DHS
Messages: 3208
Registered: February 2013
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Senior Member |
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Following is a response from Senior DHS staff member, Tom Pullum:
The following Stata program, which can be used with any IR file, calculates a new set of variables giving the sex of the child indexed by birth order rather than bidx (which is 1 for the most recent birth, etc.). It can be modified to be more general, if desired, to index any or all of the b variables by birth order rather than bidx.
use "...IAIR7EFL.DTA", clear
* Recode the b variables so they are indexed by bord rather than bidx
* Illustrated for just b4, sex of the child
* Based on the relationship bidx+bord=v201+1
rename *_0* *_*
* construct a new variable, sex, that is b4 indexed by bord rather than bidx
forvalues lceb=1/20 {
gen sex_`lceb'=.
quietly forvalues lbord=1/`lceb' {
local lbidx=`lceb'+1-`lbord'
replace sex_`lbord'=b4_`lbidx' if v201==`lceb'
}
}
tab1 sex_*
tab sex_2 sex_1 [iweight=v005/1000000],col
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