Measurement Invariance of the Chinese Job Performance Questionnaire (CJPQ) across Gender and Age among Doctors

Background: At present, China urgently needs an effective and reliable tool to measure the job performance of doctors. For the first time, this study examined the measurement equivalence of the Chinese version of the Job Performance Questionnaire (CJPQ) in different genders and age groups among Chinese physician group. Methods The subjects of this study were 1901 doctors from 7 ‘grade-three’ hospitals in Harbin, Heilongjiang Province, China, with an average age of 36.59±7.91 years. And this study adopted the Chinese version of the Job Performance Questionnaire (CJPQ) compiled by Chinese scholar Qiang Lin, which includs 3 dimensions, 33 items in total and adopts the five-point Likert scoring system. Demographic variables were analyzed by SPSS 21.0 and measurement consistency tests were performed using AMOS 17.0. Results The results showed that for different genders, all changes in the CFI (Comparative Fit Index) were <0.01, indicating that the Chinese version of the Job Performance Questionnaire (CJPQ) is equivalent in terms of gender. Similarly, for subjects of different ages, all changes in CFI were also <0.01, indicating that the CJPQ is also equivalent in regard to age. Conclusions The measurement equivalence of the Chinese version of the Job Performance Questionnaire (CJPQ) among Chinese physicians of different genders and age groups is fully established.