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. 2020 Jul 1;9(7):2073. doi: 10.3390/jcm9072073

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© 2020 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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Theoretical model. PCS: Pain Catastrophizing Scale; ANX: anxiety as measured by General Well-being Schedule; DEP: depression as measured by General Well-being Schedule; PNI: Pain Intensity as measured by numeric rating scale for the previous seven days; ISI: Insomnia Severity Index; WOM: Women; MRD: Married; EDU: University education; CSM: Current smokers; EXS: Ex-smokers; OVW: Overweight; OBI: Obesity I; OBS: Obesity II and III; LAC: Low alcohol consumption; HAC: High alcohol consumption; COM: Number of comorbidities.