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st: RE: RE: data managment


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: data managment
Date   Mon, 8 Jul 2002 21:05:51 +0100

asad
> 
> Thanks Nick, it works. 
> Sorry for the error (regarding id of the 2nd wife).
> The corrected data is as follows:
> 
> hhold	id	S_id	M_id	Age	S_age	M_age
> 23	1	2	4	35	30	65
> 23	2	1	.	30	35	.
> 23	3	.	2	3	.	30
> 23	4	.	.	65	.	.
> 45	1	2	.	40	50	.
> 45	2	1	.	50	40	.
> 45	3	.	1	12	.	40
> 45	4	.	1	8	.	40
> 45	5	.	1	5	.	40
> 45	6	2	.	30	50	.
> 45	7	.	6	2	.	30
> 45	8	.	6	5	.	30
> 
> As i can see, the commands assign '40' to individual 2
> (i.e. husband) in hhold 45 as his spouse_age. That is,
> In case where the husband has more than one wife, it
> assigns age of the first wife (or whoever is assigned
> as spouse by the surveyor) as the age of the spouse.
>  
> Ideally, i wanted it to be an average of the ages of
> the wives (as you have also noted). But this seems
> problematic given the survey design which assigns
> spouse_id for the husband somewhat randomly in
> presence of more than 1 wife.
 
Good. To reprise, each person has one mother, so 

bysort hhold (id) : gen M_age = Age[M_id] 

would seem to take care of that, insofar 
as mothers are present in the data set. 

Let's revisit the Stata problem posed by polygyny. 



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