Abstract: Objective: To develop an instrument for measuring the discharge preparation for patients with varicose veins of lower extremity after radiofrequency ablation surgery and test its reliability and validity. Methods: Under the guidance of transition theory, the dimensions and entry pool of the scale were initially set through comprehensive literature search, screening, reading and group discussion. Items were modified through expert letter inquiry methods, pre-surveys, project analysis and exploration sub-analyses, and then formal scales were formed. Using the convenient sampling method, 176 patients who underwent varicose veins of lower extremity radiofrequency ablation surgery in the vascular ward of general surgery in a Class A tertiary hospital in Tianjin from July 2022 to April 2023 were included and the reliability and validity test were conducted to construct the discharge readiness scale for patients with varicose veins after surgery. Results: The discharge preparation scale for patients with varicose veins of lower extremity after radiofrequency ablation surgery included 22 items in 4 dimensions. They were disease knowledge, personal status, coping ability and social support. The cumulative variance contribution rate was 75.853%. The recovery rate of the two rounds of expert letters was 100%, the expert authority coefficients were 0.83 and 0.86, and Kendall coordination coefficients were 0.433 and 0.351 (P<0.05). The total Cronbach′s α coefficient of the questionnaire was 0.954 and the Cronbach′s α coefficients of each dimension were 0.850, 0.958, 0.602 and 0.709. The content validity index (S-CVI) of the scale level was 0.962, and the content validity index (I-CVI) of the items level were 0.813 to 1.000. Conclusion: The discharge preparation scale for patients with varicose veins of lower extremity after radiofrequency ablation surgery constructed in this study is scientific and practical, and can be used to evaluate the discharge preparation of patients with varicose veins of lower extremity after radiofrequency ablation surgery.

Key words: Varicose veins of lower extremity, Radiofrequency ablation surgery, Preparation for hospital discharge, Scale; Reliability and validity test

摘要： 目的：构建下肢静脉曲张射频消融术后患者出院准备度量表并检验其信效度。方法：在过渡理论的指导下，通过文献检索、小组讨论初步构建量表的维度和条目池。通过专家函询法、预调查、项目分析和验证性因子分析修改条目，形成正式量表。2022 年7 月至 2023 年 4 月，采用便利抽样法选取天津市某三级甲等医院血管外科行下肢静脉曲张射频消融手术的 176 例患者进行调查，检验量表的信效度。结果：下肢静脉曲张射频消融术后患者出院准备度量表包括疾病知识、应对能力、个人状态、社会支持 4 个维度，22 个条目、累计方差贡献率为 75.853%。2 轮专家函询问卷回收率均为 100%，2 轮函询专家权威系数为 0.83、0.86，肯德尔协调系数为 0.433、0.351（P＜0.05），量表总 Cronbach′s α 系数为 0.954，各维度的 Cronbach′s α 系数为 0.850、0.958、0.602、0.709；量表水平的内容效度指数（S-CVI）为 0.962，各条目水平的内容效度指数（I-CVI）为 0.813~1.000 。结论：下肢静脉曲张射频消融术后患者出院准备度量表具有科学性和实用性，可用于评估下肢静脉曲张射频消融术后患者出院准备度。

关键词: 下肢静脉曲张, 射频消融术, 出院准备度, 量表, 信效度检验