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From |
Peter Muhlberger <[email protected]> |

To |
[email protected] |

Subject |
st: svyset problem 1 |

Date |
Wed, 23 Sep 2009 16:16:30 -0500 |

Hi folks: Any thoughts on this mysterious error msg? I get the following error... . svy: reg motivhlthQ25d knowfewprofsQ26a badexperQ26b (running regress on estimation sample) fpc for all observations within a stratum must be the same r(461); ...using this syvset command: svyset School_Number, poststrata(category) postweight(categorySchoolsN) singleunit(centered) fpc(NumSchoolsInCategory) When I do a crosstab on category and NumSchoolsInCategory, there is only one NumSchoolsInCategory for any given category, thus fpc values are identical for all observations in a given stratum--contrary to the error message. r(461) might also indicate some issues w/ calculating the variance. I have a minimum N of 36 per category & max 294, so I'd think variance calculation shouldn't be a problem. School_Number is an identifier for each school. category is a strata identifier (subsets of schools with similar characteristics). categorySchoolsN is the number of students in a given category and NumSchoolsInCategory is the number of schools in a given category. There are 8 categories. * * 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/

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