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Groeneveld IF, Proper KI, van der Beek AJ, et al. Factors associated with non-participation and drop-out in a lifestyle intervention for workers with an elevated risk of cardiovascular disease. Int J Behav Nutr Phys Act. 2009;6:80doi: 10.1186/1479-5868-6-80.
Groeneveld, I. F., Proper, K. I., van der Beek, A. J., Hildebrandt, V. H., & van Mechelen, W. (2009). Factors associated with non-participation and drop-out in a lifestyle intervention for workers with an elevated risk of cardiovascular disease. The international journal of behavioral nutrition and physical activity, 680. https://doi.org/10.1186/1479-5868-6-80
Groeneveld, Iris F, et al. "Factors associated with non-participation and drop-out in a lifestyle intervention for workers with an elevated risk of cardiovascular disease." The international journal of behavioral nutrition and physical activity vol. 6 (2009): 80. doi: https://doi.org/10.1186/1479-5868-6-80
Groeneveld IF, Proper KI, van der Beek AJ, Hildebrandt VH, van Mechelen W. Factors associated with non-participation and drop-out in a lifestyle intervention for workers with an elevated risk of cardiovascular disease. Int J Behav Nutr Phys Act. 2009 Dec 01;6:80. doi: 10.1186/1479-5868-6-80. PMID: 19951417; PMCID: PMC3224927.
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Int J Behav Nutr Phys Act. 2009 Dec 01;6:80. doi: 10.1186/1479-5868-6-80.

Factors associated with non-participation and drop-out in a lifestyle intervention for workers with an elevated risk of cardiovascular disease.

The international journal of behavioral nutrition and physical activity

Iris F Groeneveld, Karin I Proper, Allard J van der Beek, Vincent H Hildebrandt, Willem van Mechelen

Affiliations

  1. Department of Public and Occupational Health, EMGO Institute for Health and Care Research, VU University Medical Center, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands.

PMID: 19951417 PMCID: PMC3224927 DOI: 10.1186/1479-5868-6-80

Abstract

BACKGROUND: Non-response and drop-out are problems that are commonly encountered in health promotion trials. Understanding the health-related characteristics of non-participants and drop-outs and the reasons for non-participation and drop-out may be beneficial for future intervention trials.

METHODS: Male construction workers with an elevated risk of cardiovascular disease (CVD) were invited to participate in a lifestyle intervention study. In order to investigate the associations between participation and CVD risk factors, and drop-out and CVD risk factors, crude and multiple logistic regression analyses were performed. The reasons for non-participation and drop-out were assessed qualitatively.

RESULTS: 20% of the workers who were invited decided to participate; 8.6% of the participants dropped out before the first follow-up measurement. The main reasons for non-participation were 'no interest', 'current (para-)medical treatment', and 'feeling healthy', and for drop-out they were 'lack of motivation', 'current (para-)medical treatment', and 'disappointment'. Participants were 4.2 years older, had a higher blood pressure, higher total cholesterol, and lower HDL cholesterol than non-participants, and were more likely to report 'tiredness and/or stress' and 'chest pain and/or shortness of breath'. After adjusting for age, most risk factors were not significantly associated with participation. Drop-outs were 4.6 years younger than those who completed the study. The prevalence of smoking was higher among non-participants and drop-outs.

CONCLUSION: Participants had a worse CVD risk profile than non-participants, mainly because of the difference in age. Non-participants and drop-outs were younger and more likely to be smokers. The main reasons for non-participation and drop-out were health-related. Investigators in the field of health promotion should be encouraged to share comparable information.

TRIAL REGISTRATION: Current Controlled Trials ISRCTN60545588.

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