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BMC Medical Research Methodology
Published in: BMC Medical Research Methodology 1/2008

Open Access 01-12-2008 | Research article

Motives for (not) participating in a lifestyle intervention trial

Authors: Jeroen Lakerveld, Wilhelmina IJzelenberg, Maurits W van Tulder, Irene M Hellemans, Jan A Rauwerda, Albert C van Rossum, Jaap C Seidell

Published in: BMC Medical Research Methodology | Issue 1/2008

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Abstract

Background

Non-participants can have a considerable influence on the external validity of a study. Therefore, we assessed the socio-demographic, health-related, and lifestyle behavioral differences between participants and non-participants in a comprehensive CVD lifestyle intervention trial, and explored the motives and barriers underlying the decision to participate or not.

Methods

We collected data on participants (n = 50) and non-participants (n = 50) who were eligible for inclusion in a comprehensive CVD lifestyle interventional trial. Questionnaires and a hospital patient records database were used to assess socio-demographic, health-related and lifestyle behavioral variables. Univariate and multivariate logistic regression was used to describe the relationship between explanatory variables and study participation. Furthermore, motives and barriers that underlie study participation were investigated by means of questionnaires.

Results

Participants were younger, single, had a higher level of education and were employed. No statistically significant differences were found in health measures and behavioral variables. The motives for participation that were most frequently reported were: the perception of being unhealthy and willingness to change their lifestyle. The main barriers reported by non-participants were financial arguments and time investment.

Conclusion

The differences between participants and non-participants in a lifestyle intervention trial are in mainly demographic factors. The participants consent in order to alter their lifestyle, and/or because they want to improve their health. To minimize non-participation, it is recommended that access to a lifestyle intervention program should be easy and cause no financial restraints.

Trial registration

ISRCTN69776211.
Appendix
Available only for authorised users
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Metadata
Title
Motives for (not) participating in a lifestyle intervention trial
Authors
Jeroen Lakerveld
Wilhelmina IJzelenberg
Maurits W van Tulder
Irene M Hellemans
Jan A Rauwerda
Albert C van Rossum
Jaap C Seidell
Publication date
01-12-2008
Publisher
BioMed Central
Published in
BMC Medical Research Methodology / Issue 1/2008
Electronic ISSN: 1471-2288
DOI
https://doi.org/10.1186/1471-2288-8-17

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