中国公共卫生

目的 评价全国传染病监测预警智慧化成熟度调查问卷的信度与效度。方法 根据传染病监测预警智慧化成熟度指标体系编制调查问卷，采用专家咨询的方式对问卷进行内容、条目以及内容效度等方面的评定。采用随机抽样的方法，于2023年10月中旬，抽取中国内地700家县（区）疾控中心开展为期1个月的问卷调查。利用临界比值法分析项目，以Cronbach′s α系数、Spearman-Brown系数评价信度，采用验证性因子分析和内容效度指数法分析效度。结果 在项目分析中，IT基础设施建设情况、云桌面云终端等安全措施覆盖的用户范围、传染病监测预警的信息化建设采用国家信息标准情况、调用国家应用服务接口（API）使用开发工具包（SKD）实现应用集成的能力、传染病漏报率、传染病临床综合征监测中确诊病例比例6个条目未达标，综合考虑后予以保留。信度分析结果显示，总Cronbach′s α系数为0.872,3个维度的Cronbach′s α系数中智慧化战略与基础为0.755、业务流程与管理智慧化为0.857、智慧化成效为0.607,Spearman-Brown系数为0.756。分析效度显示，调查问卷总体内容效度指数为0.985，各条目内容效度指数0.820～1.000，验证性因子分析所构建的结构方程模型经修正后拟合良好。结论 全国传染病监测预警智慧化成熟度调查问卷具有良好的信效度，适用于全国省统筹区域平台传染病监测预警智慧化成熟度评价的研究。

Objective To evaluate the reliability and validity of a national questionnaire on the intelligent maturity of infectious disease surveillance and early warning. Methods A questionnaire was developed based on the intelligent maturity index system for infectious disease surveillance and early warning. Expert consultation was used to assess the content, items, and content validity of the questionnaire. A random sampling method was taken to select 700 county(district) CDCs in the Chinese mainland for a one-month questionnaire survey in mid-October 2023. Item analysis was performed with the critical ratio method. Reliability was evaluated using Cronbach′s α coefficient and Spearman-Brown coefficient. Validity was analyzed using confirmatory factor analysis and content validity index. Results In the item analysis, six items did not meet the standard: IT infrastructure construction, coverage of security measures such as cloud desktop and cloud terminal, adoption of national information standards for the informatization construction of infectious disease surveillance and early warning, ability to call national application programming interfaces(APIs) and use software development kits(SDKs) to achieve application integration, missed reporting rate of infectious diseases, and proportion of confirmed cases in the syndromic surveillance of infectious diseases. After comprehensive consideration,these items were retained. The reliability analysis showed that the total Cronbach′ s α coefficient was 0.872. The Cronbach′s α coefficients for the three dimensions were 0.755 for intelligent strategy and foundation, 0.857 for intelligent business process and management, and 0.607 for intelligent effectiveness. The Spearman-Brown coefficient was 0.756.The validity analysis showed that the overall content validity index of the questionnaire was 0.985, and the content validity index of each item ranged from 0.820 to 1.000. The structural equation model constructed by confirmatory factor analysis fitted well after modification. Conclusion The national questionnaire on the intelligent maturity of infectious disease surveillance and early warning has good reliability and validity, and is suitable for evaluating the intelligent maturity of infectious disease surveillance and early warning on integrated regional platforms across provinces nationwide.