医学结局研究用疼痛量表在腰痛患者中的信效度初步研究

目的:评价医学结局研究用疼痛量表(the Medical Outcomes Study Pain Measurement,MOSPM)的信度及效度。方法:58例临床慢性腰背痛患者评定MOSPM,以VAS和SF-36为效度标准进行自评,四周后重测MOSPM。对量表的内部一致性、重测信度和平行效度进行分析。结果:MOSPM标准化后的各条目分与总分的相关系数在0·72~0·94之间,其中疼痛平均程度项(条目6)与总分的相关系数为0·94(P<0·001),Cronbach sα系数为0·97。MOSPM各条目的重测相关系数为0·70~0·92,总分的相关系数为0·86(P<0·001)。MOSPM各条目分与VAS分的相关系数在0·49~0·89(P<0·001)之间,MOSPM总分与VAS分的相关系数为0·85(P<0·001)。SF-36除外生理机能分量表与5个MOSPM条目不相关、精神健康分量表与疼痛频率也不相关外,其余相关均有统计学意义,相关系数在-0·29~-0·92之间(P<0·05)。结论:MOSPM在慢性腰背痛患者中应用具有较好的信度和效度。

Reliability and Validity of the Medical Outcomes Study Pain Measurement (MOSPM) in Patients with Back Pain

Objective: To assess the reliability and parallel validity of the Medical Outcomes Study Pain Measurement (MOSPM) in patients with chronic low back pain. Methods: 58 patients with chronic low back pain were rated with MOSPM, Visual Analogue Pain Rating Scale (VAS) and the Short-Form-36 Health Survey (SF-36). Four weeks later, they were rated again with MOSPM. The internal consistency, test-retest reliability and parallel validity of MOSPM were analyzed respectively. Results:The standardized scores of each item were significantly related with the total score of MOSPM, the relative coefficients were between 0.72-0.94, and the coefficient of the score of the item about average pain severity (No.6) with the total score of MOSPM was 0.94(P<0.001). The coefficient of internal consistency (Cronbach's a coefficient) of MOSPM was 0.97. The coefficient of test-retest for all items of MOSPM was between 0.70-0.92(P<0.001),and coefficient of test-retest total score was 0.86(P<0.001). Each item of MOSPM was significantly related to VAS score and the coefficient was between 0.49~0.89(P<0.001), and coefficient of MOSPM total score with VAS was 0.85. (P<0.001). Almost all items of MOSPM were significantly related with 8 sub-scales of SF-36 with coefficient between -0.29~-0.92(P<0.05). Conclusions: It showed that the Chinese version of MOSPM had good reliability and validity.