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. 2018 Mar 16;10:20. doi: 10.1186/s13098-018-0322-9

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Adjusted for percentage of work productivity and activity impairment by body mass index class among all respondents. Normal weight: 18.5–24.9 kg/m²; overweight: 25–29.9 kg/m²; obese class I: 30–34.9 kg/m²; obese class II: 35–39.9 kg/m²; obese class III: 40 kg/m². *The mean is significantly different than normal-weight group. All models controlled for age, gender, race, marital status, education, income, exercise, smoking, alcohol use, and Charlson comorbidity index