The Psychometric Properties of the Chinese Version of the Pain Relief Motivation Scale in Patients With Neurogenic Chronic Pain.

Abstract

Background: The Pain Relief Motivation Scale (PRMS) was administered to chronic pain sufferers and predicts their psychological well-being. However, the Chinese version of the PRMS has not undergone psychometric validation.

Objectives: The PRMS will be psychometrically validated in patients with neuropathic pain-induced chronic pain from mainland China.

Methods: This cross-sectional study involved 340 patients with neuropathic chronic pain from China. The measurability of the Chinese version of the PRMS was determined by the critical ratio between items, and reliability was confirmed by Cronbach's alpha coefficient. The study also examined the validity of the construction and criterion validity of the Chinese PRMS.

Results: The Chinese version of the PRMS had critical ratio (CR) values ranging from 4.044 to 15.977 (p < 0.05). The Cronbach's alpha coefficient for the scale was 0.821, and the Cronbach's alpha coefficients for the subscales ranged from 0.663 to 0.961. Exploratory Factor Analysis (EFA) showed that five variables accounted for 77.73% of the total variance. The results of the Confirmatory Factor Analysis (CFA) supported the framework for the assessment of the 21-item PRMS. The Chinese version of the PRMS was positively correlated with the General Self-Efficacy Scale in the correlation validity analyses (r = 0.458, p < .001).

Conclusion: The Chinese version of the PRMS has powerful validity and reliability and can be used to assess the level of the motivation for pain alleviation in people with pain, serving as a reference for the development of intervention programs for healthcare providers.