Institute of Medical Informatics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, Berlin, 10117, Germany, 49 30 450 581018.
Department of Anesthesiology and Intensive Care Medicine CVK/CCM, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
JMIR Hum Factors. 2024 Aug 8;11:e57658. doi: 10.2196/57658.
The Charité Alarm Fatigue Questionnaire (CAFQa) is a 9-item questionnaire that aims to standardize how alarm fatigue in nurses and physicians is measured. We previously hypothesized that it has 2 correlated scales, one on the psychosomatic effects of alarm fatigue and the other on staff's coping strategies in working with alarms.
We aimed to validate the hypothesized structure of the CAFQa and thus underpin the instrument's construct validity.
We conducted 2 independent studies with nurses and physicians from intensive care units in Germany (study 1: n=265; study 2: n=1212). Responses to the questionnaire were analyzed using confirmatory factor analysis with the unweighted least-squares algorithm based on polychoric covariances. Convergent validity was assessed by participants' estimation of their own alarm fatigue and exposure to false alarms as a percentage.
In both studies, the χ2 test reached statistical significance (study 1: χ226=44.9; P=.01; study 2: χ226=92.4; P<.001). Other fit indices suggested a good model fit (in both studies: root mean square error of approximation <0.05, standardized root mean squared residual <0.08, relative noncentrality index >0.95, Tucker-Lewis index >0.95, and comparative fit index >0.995). Participants' mean scores correlated moderately with self-reported alarm fatigue (study 1: r=0.45; study 2: r=0.53) and weakly with self-perceived exposure to false alarms (study 1: r=0.3; study 2: r=0.33).
The questionnaire measures the construct of alarm fatigue as proposed in our previous study. Researchers and clinicians can rely on the CAFQa to measure the alarm fatigue of nurses and physicians.
Charité 报警疲劳问卷 (CAFQa) 是一个由 9 个问题组成的问卷，旨在标准化护士和医生的报警疲劳的测量方法。我们之前假设它有两个相关的量表，一个是关于报警疲劳的身心影响，另一个是关于工作人员在处理报警时的应对策略。
我们旨在验证 CAFQa 的假设结构，从而为该工具的构念效度提供支持。
我们在德国的重症监护病房进行了两项独立的护士和医生研究（研究 1：n=265；研究 2：n=1212）。使用基于偏相关协方差的未加权最小二乘法对问卷的回答进行验证性因子分析。通过参与者对自身报警疲劳和假警报暴露率的估计来评估聚合效度。
在两项研究中，卡方检验均具有统计学意义（研究 1：χ226=44.9；P=.01；研究 2：χ226=92.4；P<.001）。其他拟合指标表明模型拟合良好（在两项研究中：近似均方根误差<0.05，标准化均方根残差<0.08，相对非中心指数>0.95，塔克-刘易斯指数>0.95，比较拟合指数>0.995）。参与者的平均得分与自我报告的报警疲劳中度相关（研究 1：r=0.45；研究 2：r=0.53），与自我感知的假警报暴露率弱相关（研究 1：r=0.3；研究 2：r=0.33）。
该问卷测量了我们之前研究中提出的报警疲劳的构念。研究人员和临床医生可以依靠 CAFQa 来测量护士和医生的报警疲劳。
