患者指定的疼痛数字评分中具有临床意义的最小差异。
The minimum clinically significant difference in patient-assigned numeric scores for pain.
作者信息
Kendrick Dawn B, Strout Tania D
机构信息
Department of Emergency Medicine, Maine Medical Center, Portland, ME 04102, USA.
出版信息
Am J Emerg Med. 2005 Nov;23(7):828-32. doi: 10.1016/j.ajem.2005.07.009.
OBJECTIVE
To determine the minimum clinically significant difference (MCSD) in patient-assigned, 11-point numeric rating scale (NRS-11) scores for pain and to determine if the MCSD varied with demographic characteristics.
METHODS
Eligible emergency department patients presenting with pain were asked to rate their pain on the NRS-11 every 20 minutes. Subjects compared pain intensity by choosing from the following verbal descriptor responses: "a lot more," "a little more," "about the same," "a little less," or "a lot less" pain. The MCSD was defined as the difference between scores rated "a little more" or "a little less" severe.
RESULTS
Three hundred fifty-four subjects were enrolled. The MCSD was 1.39 +/- 1.05 (95% confidence interval, 1.27-1.51). No statistically significant difference based on sex or pain etiology was noted.
CONCLUSIONS
Findings suggest that a change of 1.39 +/- 1.05 (95% confidence interval, 1.27-1.51) on the NRS-11 is clinically significant when measuring pain.
目的
确定患者自评的11点数字评分量表（NRS - 11）疼痛评分中的最小临床显著差异（MCSD），并确定MCSD是否随人口统计学特征而变化。
方法
要求符合条件的因疼痛就诊于急诊科的患者每20分钟使用NRS - 11对其疼痛进行评分。受试者通过从以下语言描述性回答中选择来比较疼痛强度：“疼得多”、“稍疼一点”、“差不多”、“稍轻一点”或“轻得多”。MCSD被定义为评为“稍疼一点”或“稍轻一点”严重程度的评分之间的差异。
结果
共纳入354名受试者。MCSD为1.39±1.05（95%置信区间，1.27 - 1.51）。未观察到基于性别或疼痛病因的统计学显著差异。
结论
研究结果表明，在测量疼痛时，NRS - 11上1.39±1.05（95%置信区间，1.27 - 1.51）的变化具有临床意义。
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