Jensen Mark P, Turner Lindsey R, Turner Judith A, Romano Joan M
Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, Washington, USA Multidisciplinary Pain Center, University of Washington Medical Center, Seattle, Washington, USA Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, Washington, USA.
Pain. 1996 Sep;67(1):35-40. doi: 10.1016/0304-3959(96)03078-3.
This study examined the relative predictive validities of several measures of pain intensity. Forty chronic pain patients completed 6-14 days worth of hourly pain ratings, which were averaged to obtain a measure of actual average pain intensity. These patients then made ratings, on 101-point numerical rating scales, of worst, least, and usual pain during the previous 2 wks, and of their current pain. A series of correlation coefficients were computed and regression analyses were performed to determine the individual or composite measures that best predicted actual average pain intensity. Consistent with previous research, the best single predictor of actual average pain intensity was patient rating of least pain in the previous 2 wks. Of all possible composites of usual, least, worst, and current pain ratings, the arithmetic mean of least and usual pain had the strongest relationship to actual average pain. The inclusion of ratings of most pain or current pain in any composite score actually weakened the relationship between the composite score and actual average pain intensity. These results suggest that, when clinicians or researchers wish to assess average pain among chronic pain patients, but cannot obtain multiple measures of pain over time, the most valid measure would be the arithmetic mean of patient-recalled least and usual pain.
本研究考察了几种疼痛强度测量方法的相对预测效度。40名慢性疼痛患者完成了为期6 - 14天的每小时疼痛评分，将这些评分平均以获得实际平均疼痛强度的测量值。然后，这些患者使用101分数字评分量表对前两周内最严重、最轻微和通常的疼痛以及当前疼痛进行评分。计算了一系列相关系数并进行了回归分析，以确定最能预测实际平均疼痛强度的个体或综合测量方法。与先前的研究一致，实际平均疼痛强度的最佳单一预测指标是患者对前两周内最轻微疼痛的评分。在所有可能的由通常、最轻微、最严重和当前疼痛评分组成的综合指标中，最轻微和通常疼痛的算术平均值与实际平均疼痛的关系最为密切。在任何综合评分中纳入最严重疼痛或当前疼痛的评分实际上会削弱综合评分与实际平均疼痛强度之间的关系。这些结果表明，当临床医生或研究人员希望评估慢性疼痛患者的平均疼痛，但无法获得随时间变化的多种疼痛测量值时，最有效的测量方法将是患者回忆的最轻微和通常疼痛的算术平均值。
