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Nutrients 2013, 5(10), 3828-3838; doi:10.3390/nu5103828

An Instrument to Measure Adherence to Weight Loss Programs: The Compliance Praxis Survey-Diet (COMPASS-Diet)

1,* , 2
1 School of Public Health, Queensland University of Technology, Brisbane, Queensland, 4059, Australia 2 Ludwig Boltzmann Institute Health Promotion Research, 1020 Vienna, Austria 3 Center of Public Health, Institute of Social Medicine, Medical University of Vienna, 1090 Wien, Austria
* Author to whom correspondence should be addressed.
Received: 6 May 2013 / Revised: 26 July 2013 / Accepted: 12 September 2013 / Published: 26 September 2013
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Adherence to behavioral weight loss strategies is important for weight loss success. We aimed to examine the reliability and validity of a newly developed compliance praxis-diet (COMPASS-diet) survey with participants in a 10-week dietary intervention program. During the third of five sessions, participants of the “slim-without-diet” weight loss program (n = 253) completed the COMPASS-diet survey and provided data on demographic and clinical characteristics, and general self-efficacy. Group facilitators completed the COMPASS-diet-other scale estimating participants’ likely adherence from their perspective. We calculated internal consistency, convergent validity, and predictive value for objectively measured weight loss. Mean COMPASS-diet-self score was 82.4 (SD 14.2) and COMPASS-diet-other score 80.9 (SD 13.6) (possible range 12–108), with lowest scores in the normative behavior subscale. Cronbach alpha scores of the COMPASS-diet-self and -other scale were good (0.82 and 0.78, respectively). COMPASS-diet-self scores (r = 0.31) correlated more highly with general self-efficacy compared to COMPASS-diet-other scores (r = 0.04) providing evidence for validity. In multivariable analysis adjusted for age and gender, both the COMPASS-diet-self (F = 10.8, p < 0.001, r2 = 0.23) and other (F = 5.5, p < 0.001, r2 = 0.19) scales were significantly associated with weight loss achieved at program conclusion. COMPASS-diet surveys will allow group facilitators or trainers to identify patients who need additional support for optimal weight loss.
Keywords: COMPASS-diet; weight-loss; surveys COMPASS-diet; weight-loss; surveys
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Janda, M.; Zeidler, D.; Böhm, G.; Schoberberger, R. An Instrument to Measure Adherence to Weight Loss Programs: The Compliance Praxis Survey-Diet (COMPASS-Diet). Nutrients 2013, 5, 3828-3838.

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