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Re: re: st: help for analyse survey data with complex sampling design
>Stata has a whole suite of statistical commands designed for survey data.
>If you type:
>. whelp svy
>You will get Stata help window with a list of all the survey commands where you can
>click on them and get help for them.
>Before using any command you will need to tell Stata what your strata
>and your psu variables are with the -svyset- command. Once this is set in your
>Stata session any survey command after it will use these strata and psu variables.
>. svyset , strata(district_id) psu(school_id)
the only thing i can not understand is why psu is school_id,but not distric_id or sub-distric_id?
>My example assumes you do not have a sample weight. If you do then the command would
>look like this:
>. svyset [pweight=sample_wt], strata(district_id) psu(school_id)
>Then you can look at your means for example:
>. svymean age gpa income
>> From rghuang <email@example.com>
>> To "firstname.lastname@example.org" <email@example.com>
>> Subject st: help for analyse survey data with complex sampling design
>> Date Wed, 24 Mar 2004 20:16:28 +0800
>> hi ,listers
>> recently ,i carry out a survey and i hope any of you can give me some advice
>> on how i can analyze my data with my own complex sampling design.
>> my samling design is as follows:
>> the population is all the students in 7 districs(the population id quite big).
>> we divide 7 districs in the 3 stratum(each distric have different amount of schools
>> and students), then sample one distric each strata,let us name it A,B,C.we can know
>> the number of sudents in A,B and C.and A,B,C has different numbers of sub-districs,
>> then we sample the 8 sub-distrcis from each randomly.and then we sample randomly
>> about 5 schools from each sampled sub-distric.at last we sample about 100 students
>> from each sampled school and get the sample that we want.it is so design considering
>> the feasibility.we have the information about the amount of sub-districs in each
>> distric, the amount of schools in each sub-dsitrics, and the aount of students in
>> each school.
>> in this case,how should i analyse the survey data ? and exactly,which varibles
>> should included in data set,and how to use your program?
>> thank you in advance!
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