Reliability and validity of Chinese Version of the Male Osteoporosis Assessment Questionnaire in male osteoporosis

Objective To translated the Male Osteoporosis Assessment Questionnaire (OPAQTM) into Chinese and test the validity and reliability of it. Methods Translation and cross-cultural adaptation of the original OPAQTM was performed according to the published guidelines. A total of 122 male osteoporosis patients in Xi'an city were included in item analysis, exploratory factor analysis and criterion-related validity and reliability analysis of this Chinese version of OPAQTM. Results A 7-factor structure with 37 items was identified through item analysis and exploratory factor analysis, which explained 73.943% of the total variance. The ratio of convergent validity of each dimension was exceeded 0.90 and exceeded 0.95 for discriminant validity. The Cronbach's α coefficient for the total OPAQTM score was 0.956. The split-half for the overall scale was 0.858. The test-retest reliability was 0.760 for the overall scale. In relation to criterion validity, the Spearman correlation coefficients ranged from 0.485 to 0.867 between the Chinese version of OPAQTM and the corresponding dimensions of 12-Item Short-Form Health Survey Questionnaire (SF-12), which were significantly correlated,P <0.01. Conclusions The Chinese version of OPAQTM appears to possess adequate validity and internal consistency. The newly translated Chinese version of OPAQTM may be used to assess the quality of life of male osteoporosis patients in China. Key words: Osteoporosis; Quality of life; Male; Reliability; Validity