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. 2018 Jan 26;8(1):e018752. doi: 10.1136/bmjopen-2017-018752

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© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

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Data collection and participant contact across 60 days for participants enrolled in QUASAR. AIMS2-SF, Arthritis Impact Measurement Scale 2-Short Form; ASES-8, Arthritis Self-Efficacy Scale-8 item; CAQ-8, Committed Action Questionnaire; DBAS-16, Dysfunctional Beliefs and Attitudes about Sleep questionnaire; HADS, Hospital Anxiety and Depression Scale; PSQI, Pittsburgh Sleep Quality Index; QoL, Quality of Life; QUASAR, quality of life, sleep and rheumatoid arthritis; RA, rheumatoid arthritis; RAPID-3, Routine Assessment of Patient Index Data 3; SCI, Sleep Condition Indicator.