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From |
Phung Lang <plang@ifspm.unizh.ch> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: RE: RE: RE: repeating the same analysis for each stratum |

Date |
Wed, 30 Jul 2003 16:54:35 +0200 |

Many thanks to Thi Minh, Carrie and Bryan for their helpful comments. I tried to run the short program TM suggested, but found that it does not work for all 26 strata. It does the analysis for only one stratum and then stops, saying that there are no more observations in the database or a certain variable cannot be found (which is not originally in the database). Is it suppose to loop, so that the analysis is repeated for each of the 26 stratum? If not, how can it be corrected so that it will loop 26 times, for each stratum? Here are my survey settings: pweight is fwtia strata is kt psu is cluster and the program: forvalues k= 1(1) 26 { drop if kt~=`k' do test.do } After running the analysis for the first stratum, then it reads: end of do-file (572 observations deleted) ORIGINALLY THERE ARE 11,936 OBSERVATIONS It then tries to repeat the analysis for the next stratum, and: . version 7.0 . xi: svylogit shotdi4 i.meduc, or variable __0000KL not found (I DO NOT HAVE THIS VARIABLE IN THE DATABASE) Any idea how to fix this? Once more, thank you for your help in advance. Phung Date: Tue, 29 Jul 2003 12:38:22 +0100 From: "Ngo,PT (pgr)" <P.T.Ngo@lse.ac.uk> Subject: st: RE: repeating the same analysis for each stratum Hello Phung, Would this work ? keep only the data for each stratum, and call your do file. svyset, clear allows to clear the survey variable which I suppose you have specified in your main analysis.do file. forvalues k = 1 (1) 26 { drop if strata~=`k' svyset, clear do analysis.do } Thi Minh Ngo Date: Tue, 29 Jul 2003 13:44:21 +0200 From: Phung Lang <plang@ifspm.unizh.ch> Subject: st: repeating the same analysis for each stratum Dear Statalist I have a database for a complex survey with 26 strata and 100 PSUs. I have done the analysis using the svy components for the entire database, and now would like to repeat the same analysis for each of the 26 strata. The planned analysis is already a do.file. I have not been able to figure out how run this do.file for each stratum efficiently as I am not a programmer. I have tried "by", but it does not work with the svymean or do command. Can someone give me some advice? I am using stata 7.0. Gratefully yours, Phung Institute for Social and Preventive Medicine (ISPM) at the University of Zurich Sumatrastrasse 30 CH-8006 Zurich, Switzerland Tel: +41-1-634 46 72 /13 Fax: +41-1-634 49 84 email: plang@ifspm.unizh.ch * * 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/

**Follow-Ups**:**st: RE: RE: RE: RE: repeating the same analysis for each stratum***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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