RE: st: find the corresponding values between two variables

[Joe Canner <jcanner1@jhmi.edu>]

The problem as I understand it (which may not be correct) is that the entry with c_est==13 is not just a problem for that observation but its presence makes all of the rest of the observations mismatched as well.

What might help here is to -reshape- the dataset so that all (c_est,c_trab) pairs can be identified and all unmatched cases eliminated.  Or, if you'd rather, just reshape again based on the c_ variables and make the mismatches have a missing partner. Something like:

gen id=_n
reshape long w_ c_, i(id) j(j) string
replace id=c_
reshape wide c_ w_, i(id) j(j) string

This assumes that your c_ variables are unique.  If not, you will have to modify this or do something else entirely.

Regards,
Joe Canner
Johns Hopkins University School of Medicine

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
Sent: Wednesday, April 16, 2014 2:38 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: find the corresponding values between two variables

Not clear what you want (or what you tried: you show no code) but does

gen diff = w_est - w_trab if c_est == c_trab

or

gen OK = c_est == c_trab

edit if OK

help?
Nick
njcoxstata@gmail.com


On 16 April 2014 19:31, Sara Neto Machado <mail@saramachado.com> wrote:
> Dear all,
>
> c_est----w_est---c_trab----w_trab
> 10----------10-----------10-------11
> 11-----------3------------11-------3
> 13-----------4-------------17-------5
> 17------------5-------------18-------7
> 18---------10----------------23-----3
> 23-----------5----------------25-----6
>
> my aim is to perform the differences between w_est and w_trab for the
> same values of c_est and c_trab. However, I have along the dataset as
> well as values that do not coincide in c_trab and c_est (Eg from the
> sample: 13) that "ruins" the sorting between those columms. I want the
> 13 to appear like missing values on the same line of c_trab. I am
> trying to search any syntax that suits my purpose and nothing relevant
> came up. Maybe there are other alternatives that I am not seeing now..
>
> Can anyone help me? much appreciated!
>
> regards,
> Sara
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