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Re: st: making a matched data set


From   "ctx705518" <ctx705518@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: making a matched data set
Date   Wed, 18 Aug 2004 01:07:35 -0000

Hi Hae-Bong,

  You can get it through the following steps:

  First, you should generate a new variable by  hhid.
     Command: bysort hhid: gen rank=_n

  Next, you can generate another varible by hhid.
     Command: bysort hhid: egen sum=sum(rank)

  Then, drop all the observations if sum is not equal 3.
     Command: drop if sum != 3

You will gent the required result matched by hhid.

Cheers

Tianxin

--- In statalist@yahoogroups.com, hbwoo@m... wrote:
> Dear all,
> I want to make a matched-couple data set. All respondents are
married in this
> data set. What I want to know is how to drop non-matched case like
the
> following first household (hhid=0000045). or keep matched-couple
cases.
> At first I thought I can use "merge" command after separating
husbands from
> wives, but it seems that's not true. Would you give me some
suggestions? or
> where can I find out some information about that? I couldn't find
it.
>
> Thanks,
> Hae-Bong
>
> hhid: household id
> sn: serial number within each household
> relate: relationship (1=householder / 2=husband or wife)
>
>
> . by hhid: list hhid sn relate sex
>
> --------------------------------------------------------------------
-----------
> -> hhid = 0000045
>
>      +--------------------------------+
>      | hhid         sn   relate   sex |
>      |--------------------------------|
>   1. | 0000045      01       01     1 |
>      +--------------------------------+
>
> --------------------------------------------------------------------
------------>
> hhid = 0000223
>
>      +--------------------------------+
>      |  hhid        sn   relate   sex |
>      |--------------------------------|
>   1. |  0000223     01       01     1 |
>   2. |  0000223     02       02     2 |
>      +--------------------------------+
>
> --------------------------------------------------------------------
------------>
> hhid = 0000378
>
>      +--------------------------------+
>      |  hhid        sn   relate   sex |
>      |--------------------------------|
>   1. |  0000378     01       01     1 |
>   2. |  0000378     02       02     2 |
>      +--------------------------------+
>
> *
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*
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