摘要目的：设计重症患者导管相关性尿路感染影响因素观察表，并检验其信度及效度，为评估重症患者导管相关性尿路感染的影响因素提供有效的工具。方法通过文献回顾和头脑风暴法形成初始调查条目，结合专家访谈及专题小组讨论确定重症患者导管相关性尿路感染影响因素观察表最终条目。2014年6月，采用方便抽样方法，对第三军医大学大坪医院的130例留置尿管的重症患者进行观察，采用项目分析、探索性因子分析及信效度检验对观察表进行评价。结果重症患者导管相关性尿路感染影响因素观察表包括5个维度和26个条目；累积方差贡献率为73.752％， Cronbachα系数为0.869，分半信度Spearman-Brown折半系数为0.828，观察表各因子与总分之间的相关系数为0.652～0.873（P＜0.01），观察表各因子间相关系数为0.311～0.823（P＜0.01）。结论观察表具有良好的信度和效度，可作为评估重症患者导管相关性尿路感染影响因素的工具。

abstractsObjective To develop a observation table with influencing factors for catheter-associated urinary tract infections in critical patients and verify its reliability and validity. Methods Literature review, brainstorming method, expert interview and group discussion were performed to identify items of the form. By convenience sampling method, totally 130 severe patients with urinary catheter were investigated by this scale. This form was evaluated by item analysis, exploratory factor analysis and reliability and validity test. Results The observation table with influencing factors for Catheter-associated Urinary Tract Infections in critical patients consisted of five dimensions and 26 items. The cumulative contribution of variance was 73.752%, the Cronbach′s alpha coefficient was 0.869 and the Spearman-Brown split-half coefficient was 0.828. Regarding to the construct validity, the correlation coefficient between the each factor and total observation table was 0.652~0.873, the correlation coefficient between the factors was 0.311~0.823. All the difference of correlation coefficients were statistically significant (P<0.01). Conclusions The observation table with influencing factors for Catheter-associated Urinary Tract Infections in critical patients has been proved to be reliable and valid. It can be used as a valid tool to assess influencing factors for Catheter-associated Urinary Tract Infections in critical patients.