Re: st: deleting observations

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

Because sterrace is not constant within hhn?

Michael Blasnik
michael.blasnik@verizon.net

----- Original Message ----- 
From: "menale kassie" <dawitkassie@yahoo.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Tuesday, September 12, 2006 12:07 PM
Subject: Re: st: deleting observations



> Dear statlisters,
>
> Once more I would like to get your help on deleting
> observations. When I run equation 1 below after the
> command (bys hhn: drop if _N==1) the minimum number of
> observation per group (household (hhn) is two.
>
> However, When I run equation 2 below for the
> sub-sample of observations using indicator variable
> (sterrace ==1) after the command (bys hhn: drop if
> _N==1) the minimum number of observation per group is
> one. I was expecting the minimum observation per group
> to be more than one. I am not clear why this is
> happening. I appreciate any help on this.
<snip>
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