Yup. that was the issue. Thx.
On Mon, May 4, 2009 at 6:22 PM, Nick Cox <[email protected]> wrote:
> Perhaps -sex- is a string variable in your data.
>
> (P.S. look at http://www.stata.com/support/faqs/techsup/sendout.html to
> see the kinds of things to report.)
>
> Nick
> [email protected]
>
> moleps islon
>
> I encounter the following while doing a univariate logistic regression:
>
> . logistic mors_30 sex
> no observations
> no observations
> r(2000);
>
> . tab sex
>
> sex | Freq. Percent Cum.
> ------------+-----------------------------------
> 1 | 1,275 48.48 48.48
> 2 | 1,355 51.52 100.00
> ------------+-----------------------------------
> Total | 2,630 100.00
>
> . tab mors_30 sex
>
> | sex
> mors_30 | 1 2 | Total
> -----------+----------------------+----------
> 0 | 1,245 1,325 | 2,570
> 1 | 30 30 | 60
> -----------+----------------------+----------
> Total | 1,275 1,355 | 2,630
>
>
> . logit mors_30 sex
> no observations
> r(2000);
>
> Other variables work beautifully.
>
> *
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>
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