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Stata 9, Epi tables, Survey, Factor

Stata 9, Epi tables, Survey, Factor. Tables for epidemiologists Survey commands Factor analysis. Tables for epidemiologists. Commands cs Cohort study with incidence proportion ir Cohort study with incidence rate cc Case-control mcc Matched case-control Example

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Stata 9, Epi tables, Survey, Factor

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  1. Stata 9, Epi tables, Survey, Factor • Tables for epidemiologists • Survey commands • Factor analysis H.S.

  2. Tables for epidemiologists • Commands • cs Cohort study with incidence proportion • ir Cohort study with incidence rate • cc Case-control • mcc Matched case-control • Example • cc diseased exposed, by(sex) Stratified MH-OR • Calculator (i=immideate) • csi 100 50 900 950 RR • iri 100 50 1000 1000 RR • cci 10 90 5 95 OR H.S.

  3. Survey commands • Purpose • A family of commands to account for survey designg effects (stratification (and clustering)) • Workflow • svyset [pweight=p1],strata(country) set probability weights and stratification • svy:mean x1 weighted mean • Regressions do not need weighting H.S.

  4. Factor analysis • Purpose • Find latent factors from a large set of variables • Workflow • factor x1 x2 x3 factor analysis • screeplot plot eigenvalues • factor x1 x2 x3, factors(3) max 3 factors • estat kmo sampling OK? • rotate varimax rotation • loadingplot 2 first factors H.S.

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