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Sleep problems are common in people with low back pain (LBP); however, the mechanisms of how sleep influences pain are complex. To date there is a lack of prospective research on the timing and development of sleep problems in those who have LBP; such information would be useful to identify individuals at risk for poor outcomes. Our aims are to investigate the predictive role of sleep problems on...
Purpose To assess the reliability, validity, and factor structure of the Persian Brief Quality of Life in Bipolar Disorder (QoL.BD) in Iranian patients with bipolar disorder (BD). Methods After translation and cross-cultural adaptation of the Brief QoL.BD, we administered the questionnaire to 184 patients diagnosed with BD. To determine factor structure, we performed both exploratory and confirmatory...
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