Cross-cultural adaptation, reliability and validity tests of the Chinese version of the Profile Fitness Mapping neck questionnaire

Abstract

Abstract Objective To translate and culturally adapt the Profile Fitness Mapping neck questionnaire (ProFitMap-neck) into the Chinese version and evaluate its psychometric properties. Methods The procedure of translation and cross-cultural adaptation was performed according to the recommended guidelines. A total of 220 patients with chronic neck pain (CNP) and 100 individuals without neck pain participated in the study. Internal consistency, test-retest reliability, content validity and construct validity were investigated. Results The Chinese version of ProFitMap-neck (CHN-ProFitMap-neck) showed adequate internal consistency (Cronbach’s α = 0.88–0.95). A good test-retest reliability was proven by the intraclass correlation coefficient (ICC3A,1 = 0.78–0.86). Floor-ceiling effects were absent. Exploratory factor analysis revealed 6 factors for the symptom scale and 4 factors for the function scale. The CHN-ProFitMap-neck showed a moderate to high negative correlation with NDI (r = 0.46–0.60, P < 0.01), a small to moderate negative correlation with VAS (r = 0.29–0.36, P < 0.01), and a small to high positive correlation with SF-36 (r = 0.21–0.52, P < 0.01). No significant correlation between the CHN-ProFitMap-neck function scale and VAS (P > 0.05) or the mental health domain of the SF-36 was found (P > 0.05). The CHN-ProFitMap-neck scores were significantly lower in the CNP group than in the non-CNP group (P < 0.01). Conclusions The CHN-ProFitMap-neck had acceptable psychometric properties and could be used as a reliable and valid instrument in the assessment of patients with chronic neck pain in mainland China.