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st: 9999, matching data, fixed effect probit etc...

From   "Nick Cox" <>
To   <>
Subject   st: 9999, matching data, fixed effect probit etc...
Date   Fri, 24 Nov 2006 17:21:30 -0000

Nirina F. had problems sending this to the list. 
I edited slightly using the -cmdname- convention. 


-----Original Message-----

I have a few questions:

1- How do I create husband and wife variable in my data where 
I have data on marital status, line number of respondent in 
the household, the sex, etc..

Then  when I have identified the husband and wife, how do I test 
whether they gave the same answer on the question of number of 
kids they have. This is basically to test whether there was mistake in the data. 

2- var2 is categorical having 4 answers,sex, year of birth. 
Plot var2 on y axis, and year of birth on x axis but only for 
female. I tried -tw histogram- but it doesn't give the graph 
I would like to get. 

3- I have the following:
year of birth: 4 digits
year of current marriage with 4 digit years but when respondent 
don't know or for other reasons, they can respond to 9999 
  so now, if I would like to calculate age at marriage, I get 
for example 8069 (9999-1930)  for people having responded 9999 
for the question year of current marriage. 

Could you suggest me please how I can transform this into 
meaningful values or anything else? 

4- does anyone know how to do -probit- with fixed effect? it seems 
that the estimates will be inconsistent so has anyone found a 
way of getting away from the incidental parameter problem? 

Thank you very much in advance. 

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