Test-retest reliability, validity, and minimum detectable change of visual analog, numerical rating, and verbal rating scales for measurement of osteoarthritic knee pain.
Test-retest reliability, validity, and minimum detectable change of visual analog, numerical rating, and verbal rating scales for measurement of osteoarthritic knee pain.
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DOI：
10.2147/jpr.s158847
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发表时间：
2018
影响因子：
2.7
通讯作者：
Iqbal ZA
中科院分区：
文献类型：
--
作者：
Alghadir AH;Anwer S;Iqbal A;Iqbal ZA
评估疼痛强度通常使用几种量表。其中，临床常用的有数字评定量表(NRS)、视觉模拟评定量表(VAS)和言语评定量表(VRS)。然而，还没有研究对其在骨关节炎(OA)疼痛测量中的可靠性和有效性进行心理测量学分析。因此，本研究检查了VAS、NRS和VRS用于测量膝骨关节炎疼痛的重测信度、效度和最小可检测变化(MDC)。此外，还评估了VAS、NRS和VRS与人口统计学变量的相关性。这项研究包括121名膝关节骨性关节炎患者(女性65人，男性56人；年龄40-80岁)。在连续两次访问期间，在24小时间隔内评估VAS、NRS和VRS的重测可靠性。使用VAS、NRS和VRS的基线分数与人口统计学变量(年龄、体重指数[BMI]、性别和骨性关节炎分级)之间的皮尔逊相关系数来检验有效性。计算测量的标准误差(SEM)和MDC以评估有统计学意义的变化。VAS、NRS和VRS的组内相关系数分别为0.97、0.95和0.93。VAS、NRS和VRS与人口统计学变量(年龄、BMI、性别和OA分级)显著相关。VAS、NRS和VRS的扫描电子显微镜分别为0.03、0.48和0.21。VAS、NRS和VRS的MDC分别为0.08、1.33和0.58。三个量表均具有良好的重测信度。然而，VAS是最可靠的，在测量膝骨关节炎疼痛方面误差最小。
Several scales are commonly used for assessing pain intensity. Among them, the numerical rating scale (NRS), visual analog scale (VAS), and verbal rating scale (VRS) are often used in clinical practice. However, no study has performed psychometric analyses of their reliability and validity in the measurement of osteoarthritic (OA) pain. Therefore, the present study examined the test–retest reliability, validity, and minimum detectable change (MDC) of the VAS, NRS, and VRS for the measurement of OA knee pain. In addition, the correlations of VAS, NRS, and VRS with demographic variables were evaluated. The study included 121 subjects (65 women, 56 men; aged 40–80 years) with OA of the knee. Test–retest reliability of the VAS, NRS, and VRS was assessed during two consecutive visits in a 24 h interval. The validity was tested using Pearson’s correlation coefficients between the baseline scores of VAS, NRS, and VRS and the demographic variables (age, body mass index [BMI], sex, and OA grade). The standard error of measurement (SEM) and the MDC were calculated to assess statistically meaningful changes. The intraclass correlation coefficients of the VAS, NRS, and VRS were 0.97, 0.95, and 0.93, respectively. VAS, NRS, and VRS were significantly related to demographic variables (age, BMI, sex, and OA grade). The SEM of VAS, NRS, and VRS was 0.03, 0.48, and 0.21, respectively. The MDC of VAS, NRS, and VRS was 0.08, 1.33, and 0.58, respectively. All the three scales had excellent test–retest reliability. However, the VAS was the most reliable, with the smallest errors in the measurement of OA knee pain.