WHAT IS THE MAXIMUM NUMBER OF LEVELS NEEDED IN PAIN INTENSITY MEASUREMENT
WHAT IS THE MAXIMUM NUMBER OF LEVELS NEEDED IN PAIN INTENSITY MEASUREMENT
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DOI：
10.1016/0304-3959(94)90133-3
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发表时间：
1994-09-01
期刊：
影响因子：
7.4
通讯作者：
ROMANO, JM
中科院分区：
文献类型：
--
作者：
JENSEN, MP;TURNER, JA;ROMANO, JM
疼痛测量文献中尚未解决的一个重要问题是评估自我报告的疼痛强度所需的水平数。对治疗结果文献的检查显示，所使用的级别数量有很大的差异，从最少的4个(例如，4分言语评定量表(VRS))到多达101个(例如，101分的数字评定量表(NRS))。这项研究的目的是为确定所需水平的数量提供一个经验性的指导方针。慢性疼痛患者(n=124)提供了治疗前和治疗后的疼痛强度测量，使用101分NRS对最轻、最多、当前和平均疼痛进行测量。仔细检查患者对这些措施的反应，以确定实际使用的剂量。此外，他们对101分量表的反应被重新编码成7个不同水平的量表(2到101分量表)。对重新编码的7个量表进行敏感性检验。结果表明，如果将101分尺度编码为11分尺度或21分尺度，信息量损失很小。此外，对101分测量的实际反应的检查表明，几乎所有患者都将其视为21分量表，以5或10的倍数提供反应，而相当多的患者将其视为II分量表，仅以10的倍数提供反应。结果表明，通常情况下，10分和21分的量表为慢性疼痛患者描述疼痛强度提供了足够的区分度。
An important issue that has yet to be resolved in pain measurement literature concerns the number of levels needed to assess self-reported pain intensity. An examination of treatment outcome literature shows a large variation in the number of levels used, from as few as 4 (e.g., 4-point Verbal Rating scales (VRS)) to as many as 101 (e.g., 101-point Numerical Rating scales (NRS)). The purpose of this study was to provide an empirically derived guideline for determining the number of levels needed. Chronic pain patients (n = 124) provided pre- and post-treatment measures of pain intensity using 101-point NRS for least, most, current, and average pain. The patients' responses to the measures were examined closely to determine the actual number of levels used. In addition, their responses to the 101-point scales were recoded to form 7 scales of varying levels (2- to 101-point scales). The sensitivity of the 7 recoded scales was examined. The results indicated that little information is lost if 101-point scales are coded as 11- or 21-point scales. Moreover, examination of the actual responses to the 101-point measure showed that almost all patients treated it as a 21-point scale by providing responses in multiples of 5 or 10, while a substantial number of patients treated it as an ii-point scale, providing responses in multiples of 10 only. The results suggest that 10- and 21-point scales provide sufficient levels of discrimination, in general, for chronic pain patients to describe pain intensity.