To Match or Not to Match in Epidemiological Studies--same Outcome but Less Power

Overview

Journal Int J Environ Res Public Health

Publisher MDPI

Specialties Environmental Health
Public Health

Date 2010 Mar 3

PMID 20195449

Citations 29

Authors

Tomas Faresjo

Ashild Faresjo

Affiliations

Soon will be listed here.

Abstract

This study aimed to analyze the possible resemblance or difference in outcome in a case-control study of quality of life for IBS patients compared to controls free from the disease, when a matching procedure for age and sex was applied for the control group compared to when all participating subjects were included in the control group. The main result was that almost the same and identical results were found irrespective of whether matching or not matching was applied in this epidemiological case-control study. The matching procedure however, slightly diminished the statistical power of the results.

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