论文部分内容阅读
目的:研制ICU患者DVT形成风险评估量表，为临床护理人员进行ICU患者DVT形成风险的评估提供理论依据。方法:拟定量表初始条目池；通过专家函询，修订量表；运用ROC曲线确定诊断阈值，利用百分位数确定风险等级分层；采用评定者间信度、内部一致性信度和分半信度进行信度分析，采用内容效度、结构效度和标准关联效度进行效度分析。结果:量表包括37个条目。10分为量表的最佳诊断阈值，ROC曲线下面积为0.837（n P<0.001）。量表的风险等级分层为：10～11分为低危，12～16分为中危，≥17分为高危。量表的评定者间信度的相关系数为0.967（n P<0.001），Cronbach's α系数为0.804，分半信度系数为0.742。量表水平的内容效度指数为0.97，标准关联效度的相关系数为0.665（n P0.500），Bartlett球形检验的χn 2值为1 849.43（n P<0.001），累计贡献率为65.39%。n 结论:本研究初步研制了ICU患者DVT形成风险评估量表，为ICU患者DVT防治工作的开展提供了科学有效的评估工具。“,”Objective:To develop the risk assessment scale for deep vein thrombosis (DVT) in Intensive Care Unit (ICU) patients so as to provide a theoretical basis for clinical nurses to assess the risk of DVT in ICU patients.Methods:We drew up the initial entry pool of the scale, and revised the scale through expert letter inquiries. The diagnostic threshold was used to determine with the receiver operating characteristic (ROC) cure, and percentiles were used to determine risk levels. The reliability was analyzed using inter-rater reliability, internal consistency reliability and split-half reliability. The validity was analyzed with the content validity, structure validity and standard correlation validity.Results:The scale included 37 items. The optimal diagnostic threshold of the scale was 10, and the area under the ROC cure was 0.837 with a statistical difference (n P<0.001) . The risk levels of the scale were as follows, 10 to 11 were divided into low risk, 12 to 16 were divided into medium risk, and ≥17 was divided into high risk. The correlation coefficient of the inter-rater reliability of the scale was 0.967 with a statistical difference (n P<0.001) , and the Cronbach's α coefficient and the split-half reliability coefficient of the scale were 0.804 and 0.742 respectively. The content validity of the scale was 0.97, and the standard correlation validity was 0.665 with a statistical difference (n P0.500) , and the χn 2 value of the Bartlett sphericity test was 1 849.43 also with a statistical difference (n P<0.001) . The cumulative contribution rate was 65.39%.n Conclusions:This study initially developed a risk assessment scale for DVT in ICU patients, which provides a scientific and effective assessment tool for the development of DVT prevention and treatment in ICU patients.