INCREASING THE RELIABILITY AND VALIDITY OF PAIN INTENSITY MEASUREMENT IN CHRONIC PAIN PATIENTS
INCREASING THE RELIABILITY AND VALIDITY OF PAIN INTENSITY MEASUREMENT IN CHRONIC PAIN PATIENTS
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DOI：
10.1016/0304-3959(93)90148-i
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发表时间：
1993-11-01
期刊：
影响因子：
7.4
通讯作者：
MCFARLAND, CA
中科院分区：
文献类型：
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作者：
JENSEN, MP;MCFARLAND, CA
本研究探讨了增加评估数量对平均疼痛强度测量的可靠性和有效性的影响。200名慢性疼痛患者完成了2周的每小时疼痛评级。进行了一系列回归分析，并计算了重测稳定性，内部一致性和效度系数，以解决4个问题。(1)慢性疼痛患者的疼痛报告每天都相似吗？(2)当疼痛强度的单一等级被用作平均疼痛的指标时，其可靠性和有效性如何？(3)需要多少次评估（数据点）才能获得具有足够至优秀心理测量特性的平均疼痛强度估计值？(4)从不同的日子取样疼痛有多重要？结果与基于患者自我报告的疼痛和心理测量理论的预测一致。首先，大多数患者没有报告从一天到另一天的相似疼痛水平，并且从一天获得的评级计算的平均疼痛评分不如从多天获得的评级共同调节的稳定。此外，正如预期的那样，结果表明，疼痛强度的单一评级作为平均疼痛的衡量标准并不足够可靠或有效。然而，根据4天内12个评分的平均值计算的复合疼痛强度评分显示出足够的可靠性和良好的有效性，作为慢性疼痛患者样本中平均疼痛的衡量标准。这些结果强调了在一段时间内对疼痛强度的多个测量值取平均值的重要性，以最大限度地提高疼痛评估的可靠性和有效性，并为决定进行多少观察提供了经验指南。
This study examined the effects of increasing the number of assessments on the reliability and validity of measures of average pain intensity. Two hundred chronic pain patients completed 2 weeks of hourly pain ratings. A series of regression analyses were performed, and test-retest stability, internal consistency and validity coefficients were computed to address 4 questions. (1) Are chronic pain patients' reports of pain similar from one day to another? (2) What is the reliability and validity of a single rating of pain intensity when used as an indicant of average pain? (3) How many assessments (data points) are required to obtain estimates of average pain intensity with adequate to excellent psychometric properties? (4) How important is it to sample pain from different days? The results were consistent with predictions based on patients' self-reports of their pain and on psychometric theory. First, the majority of patients did not report similar levers of pain from one day to another, and average pain scores calculated from ratings obtained from a single day were less stable than those coregulated from ratings obtained from multiple days. Also, and as expected, the results indicate that a single rating of pain intensity is not adequately reliable or valid as a measure of average pain. However, a composite pain intensity score calculated from an average of 12 ratings across 4 days demonstrated adequate reliability and excellent validity as a measure of the average pain in this sample of chronic pain patients. These results underscore the importance of averaging multiple measures of pain intensity across time to maximize the reliability and validity of pain assessment, and provide empirical guidelines for deciding how many observations to make.