Measuring self-reported functional status and pain in patients with chronic low back pain by postal questionnaires - A reliability study
Measuring self-reported functional status and pain in patients with chronic low back pain by postal questionnaires - A reliability study
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DOI：
10.1097/00007632-200304150-00017
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发表时间：
2003-04-15
期刊：
影响因子：
3
通讯作者：
Brox, JI
中科院分区：
文献类型：
--
作者：
Holm, I;Friis, A;Brox, JI
研究设计。进行了可靠性研究。目的：通过问卷调查，评价慢性下腰痛患者自述功能状态和疼痛状况的重测信度。在关于下腰痛的研究中，推荐使用侧重于患者自我报告的身体功能的评估工具。邮寄问卷费用不高，应考虑用来评估长期结果。邮寄问卷的可靠性尚未在慢性下腰痛患者中进行评估。42名慢性下腰痛患者(15名男性，27名女性；平均年龄40岁；范围20-61岁)同意参与研究。症状持续时间1~40年，平均8.9年。在两周的时间间隔内，两次向患者发送了一份邮寄问卷。问卷内容包括：工作满意度、背部满意度、一般功能评分(GFS)、奥斯威斯特里氏残疾指数(ODI)、疼痛、恐惧回避信念、生活满意度和止痛药。37名患者(88%)同时回复了这两份问卷。除了腰部疼痛，两份问卷的答案之间没有统计学差异。组内系数范围为0.70(腰痛)至0.94(ODI)。测量误差的重复性或绝对大小对于ODI为11.9，对于腰腿痛分别为28.6和34.2。工作、背部满意度和止痛药的卡伯值分别为0.94和0.61、0.62和0.64。GFS中不同项目的卡伯值在0.41至0.79之间。ODI与GFS、腰部疼痛、生活满意度、背部满意度的相关系数分别为0.35、-0.72、-0.76、0.76。ODI是高度可靠的。关于工作、背部满意度和止痛药的问题显示出很好的一致性。GFS、疼痛强度、恐惧回避信念和生活满意度似乎缺乏足够的可靠性，无法在邮寄问卷中推荐。
Study Design. A reliability study was performed.Objectives. To evaluate the test-retest reliability of self-reported functional status and pain in chronic low back pain patients by postal questionnaires.Summary of Background Data. Evaluation tools focusing on the patients' self-reported physical function are recommended in studies on low back pain. Postal questionnaires are inexpensive and should be considered to assess long-term results. The reliability of a postal questionnaire has not been assessed in patients with chronic low back pain.Methods. Forty-two patients with chronic low back pain ( 15 men, 27 women; mean age, 40 years; range, 20 - 61 years) agreed to participate in the study. The mean duration of symptoms was 8.9 years ( range, 1 - 40 years). A postal questionnaire was sent to the patients twice within a 2-week interval. The questionnaire included the following items: work, back satisfaction, General Function Score (GFS), Oswestry Disability Index (ODI), pain, fear-avoidance beliefs, life satisfaction and pain medication.Results. Thirty-seven patients (88%) returned both questionnaires. Except for lumbar pain, there were no statistical differences between the answers from the two questionnaires. The intraclass coefficient values ranged from 0.70 ( lumbar pain) to 0.94 ( ODI). The repeatability or absolute size of measurement error was 11.9 for the ODI and 28.6 and 34.2 for lumbar and leg pain, respectively. The kappa values for work, back satisfaction, and pain medication were 0.94 and 0.61, 0.62, and 0.64, respectively. The kappa values for the separate items in the GFS ranged from 0.41 to 0.79. The correlations between ODI and the GFS, lumbar pain, life satisfaction, and back satisfaction were 0.35, - 0.72, - 0.76, and 0.76, respectively.Conclusion. The ODI was highly reliable. The questions about work, back satisfaction, and pain medication showed good agreement. The GFS, pain intensity, fear-avoidance beliefs, and life satisfaction appeared to lack sufficient reliability to be recommended in postal questionnaires.