Attrition in longitudinal randomized controlled trials: home visits make a difference
<p>Abstract</p> <p>Background</p> <p>Participant attrition in longitudinal studies can introduce systematic bias, favoring participants who return for follow-up, and increase the likelihood that those with complications will be underestimated. Our aim was to examine the...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
BMC
2012-11-01
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Series: | BMC Medical Research Methodology |
Subjects: | |
Online Access: | http://www.biomedcentral.com/1471-2288/12/178 |