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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: Dropping var from log reg due to estimability |

Date |
Mon, 2 Mar 2009 10:44:27 -0000 |

I'm not clear what kind of answer you expect. "estimability" means being estimatable, or here strictly being _not_ estimatable. At its simplest, the signal is thus that -logistic- found it too difficult to estimate the parameters in the model you specified. The underlying reason is likely to be that you are throwing far too many predictors at the response. Nick n.j.cox@durham.ac.uk Ziad El-Khatib Using -stepwise, pr(.20): logistic- I ran different variables (all of them and dependent variables were dichotomous); got the text below then got the rest in the model. Any tips what does estimability mean? note: incomenone dropped because of estimability note: awaycat dropped because of estimability note: busycat dropped because of estimability note: elsetoseecat dropped because of estimability note: dailyroutinecat dropped because of estimability note: depressedcat dropped because of estimability note: othercat dropped because of estimability note: incomeself dropped because of estimability note: 42 obs. dropped because of estimability * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: RE: Dropping var from log reg due to estimability***From:*Ziad El-Khatib <ziad.khatib@gmail.com>

**References**:**st: Dropping var from log reg due to estimability***From:*Ziad El-Khatib <ziad.khatib@gmail.com>

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