• Yutaka Yabe, Yoshihiro Hagiwara, Takuya Sekiguchi, Yumi Sugawara, Masahiro Tsuchiya, Shinichirou Yoshida, and Ichiro Tsuji.
• Department of Orthopedic Surgery, Tohoku University School of Medicine, Miyagi, Japan.
• Spine. 2022 Feb 15; 47 (4): 361368361-368.

Study DesignA longitudinal study.ObjectiveThe aim of this study was to clarify the association between sleep disturbance and low back pain (LBP) using 3-year longitudinal data after the Great East Japan Earthquake, with a focus on the duration or frequency of sleep disturbance and the effect of sleep disturbance on LBP.Summary Of Background DataSleep disturbance and LBP are common health problems in the general population and natural disaster survivors. However, a longitudinal study in this field is rare, and the association between sleep disturbance and LBP has not been clarified.MethodsA 3-year longitudinal study was conducted among people living in disaster-stricken areas after the Great East Japan Earthquake (n = 2059). Sleep disturbance and LBP were assessed at 4, 5, 6, and 7 years after the disaster. Multiple logistic regression analysis was performed to assess the association between the duration or frequency of sleep disturbance and LBP, and the effect of preceding sleep disturbance on the onset of LBP. The χ2 test and crude and multiple logistic regression models were used in data analysis.ResultsThe duration and frequency of sleep disturbance were significantly associated with LBP, and the effect was stronger with longer duration and increased frequency of sleep disturbance. Furthermore, the duration and frequency of preceding sleep disturbance were significantly associated with the onset of LBP, and the effect was stronger with an increase in the duration and frequency of sleep disturbance.ConclusionSleep disturbance is associated with LBP in a dose-dependent manner. Attention should be paid to sleep disturbance for the treatment and prevention of LBP, especially with regard to the duration and frequency of sleep disturbance.Level of Evidence: 3.Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.

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