Allred C A, Hoffman S E, Fox D H, Michel Y
College of Nursing, Medical University of South Carolina, Charleston.
West J Nurs Res. 1994 Apr;16(2):169-82. doi: 10.1177/019394599401600204.
The purpose of this study is to evaluate the preliminary psychometric properties of the Perceived Environmental Uncertainty Questionnaire (PEUQ). Environmental uncertainty (EU) refers to times when within the organization unanticipated events and problems occur with frequency and cannot be predicted by members of the organization due to a lack of critical information. The PEUQ was designed as a measure of EU and was tested with 375 patient-care and nonpatient-care hospital employees. Internal consistency as measured by Cronbach's alpha was .81. Confirmatory factor analysis supported two of the PEUQ's hypothesized three factors: state and effect EU. These two factors accounted for 61.1% of the variance in subjects' level of uncertainty. Factor analysis failed to confirm response uncertainty as a subconstruct of EU. Contrasted group analysis found expected differences in the level of perceived EU between workers on different hospital units (t = -5.02, p < .001). This study provides evidence of the PEUQ's beginning reliability and validity as a measure of EU. Failure to identify response uncertainty as a salient subconstruct of EU warrants further exploration. The design of nursing care delivery structures (NCDS) to minimize EU first requires a means to measure hospital units' EU. The establishment of the PEUQ's psychometric soundness is antecedent to measuring EU and improving the efficacy of our NCDS.
本研究的目的是评估感知环境不确定性问卷（PEUQ）的初步心理测量特性。环境不确定性（EU）是指在组织内部，意外事件和问题频繁发生，且由于缺乏关键信息，组织成员无法预测的时期。PEUQ被设计为一种测量EU的工具，并在375名患者护理和非患者护理医院员工中进行了测试。用克朗巴哈系数测量的内部一致性为0.81。验证性因素分析支持了PEUQ假设的三个因素中的两个：状态和影响EU。这两个因素占受试者不确定性水平方差的61.1%。因素分析未能确认反应不确定性是EU的一个子结构。对比组分析发现，不同医院科室的工作人员在感知EU水平上存在预期差异（t = -5.02，p < .001）。本研究为PEUQ作为一种测量EU的工具的初步信度和效度提供了证据。未能将反应不确定性识别为EU的一个显著子结构值得进一步探索。设计护理服务提供结构（NCDS）以尽量减少EU，首先需要一种测量医院科室EU的方法。确定PEUQ的心理测量稳健性是测量EU和提高我们NCDS有效性的前提。
