Estimating adjusted risk ratios for matched and unmatched data: An update
Peter Cummings
Department of Epidemiology
School of Public Health and
Harborview Injury Prevention and Research Center
University of Washington
Seattle, WA
[email protected]
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Abstract. The Stata 11 margins command makes it easier to estimate adjusted
risk ratios, and the new robust variance option for xtpoisson, fe provides correct
confidence intervals for adjusted risk ratios from matched-cohort data.
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Peter Cummings
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conditional Poisson regression, margins, matched-cohort design, risk ratio, standardization, xtpoisson
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