Journal article

Attrition in a longitudinal study with hard-to-reach participants was reduced by ongoing contact

Michael C David, Rosa Alati, Robert S Ware, Stuart A Kinner

JOURNAL OF CLINICAL EPIDEMIOLOGY | ELSEVIER SCIENCE INC | Published : 2013

Abstract

OBJECTIVES: Minimizing attrition is a key objective in longitudinal research, with possible consequences being additional bias and reduced generalizability. Identifying determinants of attrition is essential in determining attrition prevention strategies. The objective of this study was to investigate a number of these determinants, with an emphasis on contactability. STUDY DESIGN AND SETTING: Data were taken from the Passports project, a randomized controlled trial of an intervention to provide postrelease support to ex-prisoners in Queensland, Australia. Measures of contactability included intervention intensity, baseline collaterals, and follow-up telephone calls, with attrition at follow..

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Grants

Awarded by NHMRC


Funding Acknowledgements

The authors thank the research participants for sharing their experiences and Queensland Corrective Services for assistance with data collection. The Passports project is funded by NHMRC Strategic Award #409966. Stuart Kinner is supported by NHMRC Career Development Fellowship #1004765. Rosa Alati is supported by NHMRC Career Development Award #1012485.