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From |
"Emma Slaymaker" <Emma.Slaymaker@lshtm.ac.uk> |

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

Subject |
Re: st: DHS survey data and Logistic regression |

Date |
Tue, 31 Jul 2007 11:11:22 +0100 |

Dear Olalekan, You asked about accounting for the survey design when analysing DHS data. You should account for the stratification and the clustering whenever you calculate standard errors- if you do not, the standard errors will not be correct. I always include the weighting information since I usually want to know if associations are likely to be true of the population the survey is designed to represent (with weights) and not just the survey sample (without weights). Once you have accounted for the stratification and clustering you don't really lose anything by also accounting for the weights since you are already working with robust standard errors. I don't know of a reason why it would be inappropriate to use sample weights in a regression analysis- but that may well be ignorance on my part. Hope this helps, Emma >>> Olalekan Uthman <uthlekan@yahoo.com> 30/07/07 15:49 >>> Dear Stata users, I am trying to run a logistic regression using Measure DHS survey data. Quoting from DHS statistics guide: "Use of sample weights is inappropriate for estimating relationships, such as regression and correlation coefficients. I am not sure whether to ignore the psu and strata also when running the logistic regression. Can I just use xi: logistic bmi i.edu instead of: svyset psu [pw=weight], strata(strata) xi: svy: logistic bmi i.edu ____________________________________________________________________________________ Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase. http://farechase.yahoo.com/ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: DHS survey data and Logistic regression***From:*Olalekan Uthman <uthlekan@yahoo.com>

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