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From |
"Carlo Lazzaro" <carlo.lazzaro@tiscalinet.it> |

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

Subject |
R: st: Interpretation of Two-sample t test with equal variances? |

Date |
Thu, 21 Mar 2013 12:40:07 +0100 |

Dear Gwinyai, the complexity of your seemingly simple model rests on the fact that one predictor is not enough to explain differences in delivery mode. I can bet that no researcher of no reserch field hopes to be successful in publishing a one-predictor logistic regression model. In case you did not perform it yet, I would suggest to take a look (via PubMed or Medline) at what others have published on this topic in the past and the methods they follow. For instance, the following key-word: determinants AND caesarean AND delivery in PubMed give me back 90 results (and part of them can be downloaded in extenso free of charge from journals website): some articles can be of interest for your research purposes. Best regards, Carlo -----Messaggio originale----- Da: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Per conto di Gwinyai Masukume Inviato: giovedì 21 marzo 2013 12:18 A: statalist@hsphsun2.harvard.edu Oggetto: Re: st: Interpretation of Two-sample t test with equal variances? Carlo. Thanks once again. Well, an apparently simple mode of delivery which has 2 possible outcomes is turning out to be far more complex than I anticipated. With gratitude, Gwinyai On 3/21/13, Carlo Lazzaro <carlo.lazzaro@tiscalinet.it> wrote: > Dear Gwinyai, > if you prefer to avoid a discussion about the indications for > C/section, you can consider some hospital features as predictors > instead (e.g.: public or private; teaching hospital or else; number of > beds of the obstetrics unit grouped in different categories (0-10; > .....); number of births per year grouped in different categories; > ...). > Kind regards, > Carlo > -----Messaggio originale----- > Da: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] Per conto di Gwinyai > Masukume > Inviato: mercoledě 20 marzo 2013 22:07 > A: statalist@hsphsun2.harvard.edu > Oggetto: Re: st: Interpretation of Two-sample t test with equal variances? > > Carlo - thanks, i was skeptical about going into a discussion about > the indications for C/section which can be relative or absolute; > maternal, fetal or materno-fetal. > > Austin - thanks for the link and pointing out that a pseudo R2 should > not be a worry. by increasing the sample size a thousand fold i guess > what that which is being detected is so small that in the end it's not > worth it (detecting something so small)? > > Thanks all round. Appreciated. > > G > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

**References**:**st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Richard Williams <richardwilliams.ndu@gmail.com>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

**R: st: Interpretation of Two-sample t test with equal variances?***From:*"Carlo Lazzaro" <carlo.lazzaro@tiscalinet.it>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*David Hoaglin <dchoaglin@gmail.com>

**R: st: Interpretation of Two-sample t test with equal variances?***From:*"Carlo Lazzaro" <carlo.lazzaro@tiscalinet.it>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Austin Nichols <austinnichols@gmail.com>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

**R: st: Interpretation of Two-sample t test with equal variances?***From:*"Carlo Lazzaro" <carlo.lazzaro@tiscalinet.it>

**Re: st: Interpretation of Two-sample t test with equal variances?***From:*Gwinyai Masukume <parturitions@gmail.com>

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