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. 2019 Aug 9;16(16):2843. doi: 10.3390/ijerph16162843

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Quality of life measured using the Health Assessment Questionnaire (HAQ) test at baseline (pre-) and at the end of the trial (post-intervention) in both groups (CG and EG). The bars show the average quality of life observed in each group at each time-point, and the error bars represent the standard deviation. The p-values for improvement in quality of life obtained in each group are shown. Regression coefficients for experimental group (βEG), for the interaction between group and baseline score (βEG:bl) and respective 95% confidence intervals and p-values are displayed.