st: Re: ratio of part time workers

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

You made some mistake in creating zallemps or at least it doesn't equal the 
sum in the second expression.  You seem to be posting many messages that 
track back to a lack of checking your own work or using built-in help.

Michael Blasnik

----- Original Message ----- 
From: "peter harper" <pharper11@yahoo.co.uk>
To: <statalist@hsphsun2.harvard.edu>
Sent: Monday, June 12, 2006 10:07 AM
Subject: st: ratio of part time workers



> Thanks. David. I also looked at that, as I have a variable called 
> zallemps, which is the total employment on the payroll at the 
> establishment. But when I tried both forms of denominator I got
>
> . gen ratioprtwrk=(zmalprta+zfemprta) / (zallemps)
> (40 missing values generated)
> . su ratioprtwrk
>    Variable |       Obs        Mean    Std. Dev.       Min        Max
> -------------+--------------------------------------------------------
> ratioprtwrk |     22411    .0631298    .1019029   .0002026         .8
>
> . gen ratioprtwrk=(zmalprta+zfemprta) / 
> ((zmalfulla+zfemfulla+zmalprta+zfemprta))
> (40 missing values generated)
> . su ratioprtwrk
>    Variable |       Obs        Mean    Std. Dev.       Min        Max
> -------------+--------------------------------------------------------
> ratioprtwrk |     22411    .5385854    .0624591   .3333333   .6666667
>
> I am pondering as to why there is a difference.
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