Re: st: Re: Using NEARMRG

["Michael Blasnik" <michael.blasnik@verizon.net>]

-nearmrg- calls the Stata command -isid- to check that the variable list 
uniquely identifies the observations.  Have you looked at the data to see if 
there are duplicates?  Perhaps it's a problem with missing values since isid 
will not allow missing values wihtout specifying the missok option.  If that 
is the problem, I suggest you drop the cases with missing values on either 
age or region.


----- Original Message ----- 
From: "MA V" <ma_v@hotmail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Wednesday, April 26, 2006 6:44 PM
Subject: RE: st: Re: Using NEARMRG



> I know you're the author and I thank you for these and many other programs 
> that have helped me a lot.
> One of the things I tried was dropping all the duplicates for both region 
> and age in the using file (before doing the merge):
> duplicates drop age, force
> duplicates drop region, force
>
> This should have made the nearvar unique in the using dataset within 
> levels of the varlist, right?
>
> But I keep getting the same error message.
>
> Another thing that I forgot to mention is that, in my case age is a string 
> variable (and yes, I used the option "upper" to prevent getting error 
> messages related with the fact that the nearvar is a string variable).
>
> If you have any suggestions I would appreciate your help.
> Thanks!
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