Development of questionnaire on influencing factors of quality of life in patients with sudden deafness based on Green model

Abstract

Objective:To develop a questionnaire with good reliability and validity that can comprehensively evaluate the influencing factors of life quality of patients with sudden deafness. Method:Based on the Green model and literature review, group discussions, semi-structured interviews and Delphi expert inquiries, an initial questionnaire was developed. From May 2018 to April 2019, 170 patients with sudden deafness in otolaryngology head and neck surgery in 2 comprehensive tertiary level A hospitals in Shanxi Province were selected for investigation by convenient sampling method. Through the critical ratio method and correlation analysis method, the data of each item are sorted and analyzed. The structural validity of the questionnaire was tested by exploratory factor analysis. The content validity of the questionnaire was evaluated by calculating the content validity index through expert inquiry. The reliability of the questionnaire was determined by calculating Cronbach's α coefficient and retesting the questionnaire, and finally a formal questionnaire was formed. Result:The questionnaire on influencing factors of life quality for patients with sudden deafness based on Green model includes 5 dimensions and 31 items including knowledge factors, attitude factors, behavior factors, contributing factors and reinforcement factors. The results of project analysis showed that the critical ratio of each item was 8.09-44.77（P<0.05）. Except items 8, 11 and 13, the pearson correlation coefficient between the other items and the total score is>0.3. The KMO value of the questionnaire was 0.844, and the 2 value of Bartlett's spherical test was 3218, P<0.001. Using the principal component analysis method, five common factors were extracted, named as knowledge factor, attitude factor, behavior factor, contributing factor and reinforcing factor, respectively, the cumulative variance contribution rate was 60.905%. The content validity index of the questionnaire level was 0.955, the content validity index at item level is 0.786-0.981; Cronbach's α coefficient at the questionnaire level was 0.875, Cronbach's α coefficient of each dimension is 0.780-0.912; The retest reliability of the questionnaire level was 0.88, the retest reliability of each dimension is 0.810-0.913. Conclusion:The questionnaire on influencing factors of quality of life for patients with sudden deafness based on Green model has good reliability and validity, and can be used as a tool for evaluating influencing factors of quality of life for patients with sudden deafness.