Chinesization of Emergency Medical Services Resilience Scale Questionnaire and tests of its reliability and validity

  Objective  To Chinesize and optimize the Emergency Medical Services Resilience Scale (EMSRS)and to test the applicability of this Chinese version of the Scale.

  Methods  After obtaining the authorization and consent of the original author, the EMRS questionnaire was translated into Chinese, and then the questionnaire was perfected based on cross-cultural equalization and finalized as the Chinese version. With this questionnaire, 252 emergency personnel in an emergency center in Taiyuan were investigated. The items were analyzed and the reliability and validity were tested. The item discrimination was analyzed by independent sample t test, and the reliability was evaluated by Cronbach's α coefficient, split-half reliability and retest reliability. The content validity was measured by expert consultation method, and the structural validity was verified by exploratory factor analysis.

  Results  The pre-test showed that only 6.6% of the people thought that the length or content of the scale were inappropriate or unclear, indicating that the original scale was acceptable. Project analysis showed the difference of 31 items between two groups was statistically significant (P < 0.05), so they were retained. After consulting experts, two items of the scale were adjusted. The Chinese version of EMSRS includes 31 items in 6 dimensions, and 6 common factors are extracted by exploratory factor analysis. According to the items, the 6 common factors have been named as work motivation, work enthusiasm, influence of stress, self-management, communication challenge and social support. The cumulative variance contribution rate was 75.717%. The CVI values of each item(I-CVI) in the scale ranged from 0.833-1.000, and the average CVI value of all items (S-CVI) in the scale was 0.965. The overall Cronbach's α coefficient was 0.936, the Cronbach's α coefficient for each dimension was 0.801-0.940, the split-half reliability for the total scale was 0.848, the split-half reliability for each dimension was 0.750-0.904, the test-retest reliability for the total scale was 0.872, and the test-retest reliability for each dimension was 0.742-0.879.

  Conclusions  The Chinese version of EMSRS scale has good reliability and validity, which can be used as a tool to investigate the psychological resilience of emergency medical service personnel in China.