Zhongguo quanke yixue (Jun 2024)
Study of the Perceptions of Mild Cognitive Impairement among Community Populations Questionnaire Developed Based on Delphi Method
Abstract
Background Under the background of an aging population, maintaining brain health has become an inevitable requirement of building a healthy China, and it is of great significance to carry out research on community populations' perceptions of cognitive impairment diseases. However, there is no suitable tools for investigating community populations' perceptions level of Mild Cognitive Impairment (MCI) . Objective To develop a questionnaire on perceptions toward MCI and test its reliability and validity, so as to provide a basis for promoting the management of cognitive disorders. Methods On the basis of literature review and special group discussion, the theoretical framework of questionnaire was put forward and the items of the questionnaire were preliminarily worked out. Then the items were evaluated according to the results of two rounds of mail-based Delphi surveys conducted by 13 experts in related fields in April-May 2021. The description of the items was revised through pre-survey, and the items were analyzed through questionnaire survey by difficulty index analysis, discrimination analysis, correlation coefficient analysis, reliability and validity evaluation in October-December 2021, so as to further improve the questionnaire. Results (1) Delphi survey: The positive degree of experts in the two rounds of Delphi survey was 100.0% and 84.6%, and the expert authority coefficient were 0.858 and 0.845, respectively. The range of "importance" average score of each item in the two rounds of letter inquiry was 3.77-4.92 and 3.91-4.91, and the coefficient of variation of the two rounds was 0.056-0.246 and 0.061-0.213, respectively. The harmony coefficients of Kendall in the two rounds of consultation were 0.197 and 0.252, respectively (P<0.001). 29 and 12 expert opinions and suggestions were received in the two rounds of consultation. (2) Questionnaire survey: A total of 809 questionnaires were sent out and 797 valid questionnaires were recovered, with an effective recovery rate of 98.52%. The difficulty index of each item was concentrated in 10%-90%. The discrimination index of each item is mostly above 20%. The scores of each item and each dimension were positively correlated with the total score of the questionnaire (P<0.05). The Cronbach'sα coefficient of the questionnaire was 0.712, and the split-half reliability was 0.764. The KMO value of model test was 0.800, and the Chi-square value of Bartlett spherical test was 3 049.278 (P<0.05), which suggested that it was suitable for factor analysis. The results of exploratory factor analysis showed that the cumulative variance contribution rate was 54.930%. The final questionnaire included 20 items, including "understanding of basic knowledge of MCI" "personal experience" "expectation of treatment"and "decision and behavior of seeking medical treatment" four dimensions. Conclusion The questionnaire on perceptions toward MCI based on Delphi method has good reliability and validity, and can be used as a tool to investigate the perceptions toward MCI among residents.
Keywords
