• Shao-Feng Chen, Xiao-Yi Zhou, Ya-Jun Cheng, Hao-Yan Yang, Man-Ping Li, Xiao Zhai, Ming Li, Yu-Shu Bai, and Xian-Zhao Wei.
• Department of Orthopaedic Surgery, Changhai Hospital, Shanghai, China.
• Spine. 2023 Jan 1; 48 (1): E14E19E14-E19.

Study DesignA prospective study.ObjectiveTo develop a simplified Chinese version of Lumbar Spine Instability Questionnaire (SC-LSIQ) and test its measurement properties.Summary Of Background DataThe LSIQ has been translated into several languages. Different versions of LSIQ have proved good reliability and validity in evaluating patients with low back pain. However, there is no simplified Chinese version of LSIQ (SC-LSIQ).Materials And MethodsThe SC-LSIQ has been translated into a simplified Chinese version according to a standard procedure. A total of 155 patients with low back pain completed the SC-LSIQ along with Oswestry Disability Index, Roland-Morris disability questionnaire, Tampa Scale for Kinesiophobia, and visual analogue scale (VAS). The internal consistency, test-retest reliability, and validity of SC-LSIQ were then calculated to evaluate the measurement properties of SC-LSIQ.ResultsThe results of SC-LSIQ demonstrated that there was no ceiling or floor effect detected. The Cronbach α coefficient of 0.911 determined a well internal consistency. The intraclass correlation coefficient (0.98) presented an excellent reliability of SC-LSIQ. The Pearson correlation coefficient (r) showed that the SC-LSIQ was excellent correlated to Oswestry Disability Index (r=0.809), Roland-Morris disability questionnaire (r=0.870), and Tampa Scale for Kinesiophobia (r=0.945,). Furthermore, it moderately correlated to visual analogue scale (r=0.586).ConclusionThe SC-LSIQ features good internal consistency, reliability, and validity for evaluating Chinese patients with LBP. Results suggest that the SC-LSIQ can be appropriately applied to patients with LBP in routine clinical practice.Copyright © 2022 The Author(s). Published by Wolters Kluwer Health, Inc.

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