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Comput Methods Programs Biomed. 2010 Apr;98(1):90-3. doi: 10.1016/j.cmpb.2009.11.005. Epub 2009 Dec 2.

From floated to conventional confidence intervals for the relative risks based on published dose-response data.

Author information

1
Karolinska Institutet, National Institute of Environmental Medicine, Nobelsvag 13, 17155 Stockholm, Sweden. nicola.orsini@ki.se

Abstract

A dose-response meta-analysis of epidemiological studies can encounter different types of confidence intervals (floated vs. conventional). This paper illustrates how to back calculate conventional confidence intervals from a set of relative risks reported with floated confidence intervals or floated standard errors. Furthermore, we provide an implementation of the formulas in a user-friendly program developed for Stata software. I exemplify the point using published data about alcohol intake and endometrial cancer incidence from the Million Women Study.

PMID:
19959250
DOI:
10.1016/j.cmpb.2009.11.005
[Indexed for MEDLINE]

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