Division of Biokinesiology and Physical Therapy, Herman Ostrow School of Dentistry, University of Southern California, 1540 E Alcazar St, CHP 155, Los Angeles, CA 90033, USA.
Phys Ther. 2011 Nov;91(11):1592-603. doi: 10.2522/ptj.20100135. Epub 2011 Aug 18.
Low back pain affects a substantial number of adults each year and is persistent or recurrent for many. Self-efficacy is an important predictor of functional recovery.
The purpose of this investigation was to assess the preliminary reliability and validity of the Low Back Activity Confidence Scale (LoBACS) for individuals with histories of low back pain or lumbar surgery.
Two overlapping samples of patients who had undergone a microdiskectomy participated: a test-retest sample of 21 individuals and a validity sample of 53 individuals.
Low Back Activity Confidence Scale items pertaining to self-efficacy for functional activities (FnSE subscale), self-regulation of back health (Self-RegSE subscale), and regular exercise (ExSE subscale) were generated from existing literature and clinical observations. The test-retest sample completed the LoBACS twice, approximately 10 days apart. The validity sample completed the LoBACS and measures of functional performance, self-reported leisure and occupational physical activity, pain, fear beliefs, disability, and quality of life.
The FnSE, Self-RegSE, and ExSE subscale scores and LoBACS total score had excellent to acceptable test-retest reliability (intraclass correlation coefficients of .924, .634, .710, and .850, respectively) and internal consistency (Cronbach α coefficients of .924, .804, .941, and .911, respectively). The LoBACS subscales were correlated in expected directions with physical performance, physical activity, pain, fear beliefs, disability, and quality of life, providing initial evidence of concurrent validity.
The findings provide preliminary content and concurrent validity and interrater and internal consistency reliability for the LoBACS measure of self-efficacy for individuals with histories of low back pain and lumbar microdiskectomy.
腰痛每年影响大量成年人，许多人腰痛持续或反复发作。自我效能感是功能恢复的一个重要预测因素。
本研究旨在评估低腰背活动信心量表（LoBACS）在有腰痛或腰椎手术史患者中的初步信度和效度。
接受腰椎间盘切除术的患者分为两个重叠样本：21 例患者的测试-重测样本和 53 例患者的有效性样本。
从现有文献和临床观察中生成与功能活动自我效能感（FnSE 子量表）、腰背健康自我调节（Self-RegSE 子量表）和定期运动（ExSE 子量表）相关的低腰背活动信心量表项目。测试-重测样本大约相隔 10 天完成 LoBACS 两次。有效性样本完成 LoBACS 及功能表现、自我报告的休闲和职业体力活动、疼痛、恐惧信念、残疾和生活质量的测量。
FnSE、Self-RegSE 和 ExSE 子量表评分和 LoBACS 总分的测试-重测信度均为优至可接受（组内相关系数分别为.924、.634、.710 和.850），内部一致性（Cronbach α系数分别为.924、.804、.941 和.911）。LoBACS 子量表与物理表现、体力活动、疼痛、恐惧信念、残疾和生活质量呈预期方向相关，初步证明了其同时效度。
研究结果为有腰痛和腰椎间盘微切除术史患者的自我效能感的 LoBACS 测量提供了初步的内容和同时效度、评分者间信度和内部一致性。
