缺血性脑卒中患者复发风险感知量表的编制及信效度检验

目的 编制缺血性脑卒中患者复发风险感知量表并检验其信效度。方法 以风险感知理论和健康信念模式为理论框架,通过文献分析、质性访谈、专家函询法编制量表初稿,便利选取2020年6月—2021年10月在西安市某三级甲等综合医院治疗和复查的430例缺血性脑卒中患者进行问卷调查,检验量表信效度。结果 形成的缺血性脑卒中患者复发风险感知量表包括4个维度、25个条目。临界比值法分析中,高、低分组评分差异均具有统计学意义（P<0.05）。探索性因子分析提取4个公因子,累计方差贡献率为70.164%。验证性因子分析显示,各主要评价指标均在判断标准可接受范围。条目水平的内容效度指数为0.867~1.000,全体一致量表水平的内容效度指数为0.821,平均量表水平的内容效度指数为0.979。效标关联效度分析中,量表总评分与校标量表呈正相关（r=0.522,P<0.01）。量表总的Cronbach’s α系数、分半信度、重测信度分别为0.905、0.763、0.897。 结论 缺血性脑卒中患者复发风险感知量表具有良好的信效度,适用于相关人群复发风险感知的评估。

Development and reliability and validity test of the recurrence risk perception scale for patients with ischemic stroke

Objective To develop a recurrence risk perception scale for patients with ischemic stroke and to test its reliability and validity. Methods With the risk perception theory and health belief model as the theoretical framework,the initial scale was developed through literature analysis,qualitative interviews,and expert consultation. A questionnaire survey was conducted on 430 patients with ischemic stroke who were treated or reviewed in a tertiary hospital in Xi’an from June 2020 to October 2021 to test the reliability and validity of the scale. Results The recurrence risk perception scale for patients with ischemic stroke included 25 items in 4 dimensions. In the critical ratio analysis,the difference in scores between high score group and low score group was statistically significant（P<0.05）. The exploratory factor analysis extracted 4 common factors with the cumulative variance contribution rate of 70.164%. The results of confirmatory factor analysis showed that the main evaluation indicators were all within the acceptable range of the judgment standard. The item-level content validity index ranged from 0.867 to 1.000;the scale-level content validity index/universal agreement was 0.821;the scale-level content validity index/average was 0.979. In the criterion-related validity analysis,the total score of the scale was positively correlated with the total score of the calibration scale（r=0.522,P<0.01）. The Cronbach’s α coefficient,half reliability and retest reliability of the overal scale were 0.905,0.763,and 0.897,respectively. Conclusion The recurrence risk perception scale for patients with ischemic stroke has good reliability and validity,which is suitable for assessment of recurrence risk perception in related populations.