Knapp T R, Brown J K
College of Nursing, Ohio State University, Columbus 43210, USA.
Res Nurs Health. 1995 Oct;18(5):465-9. doi: 10.1002/nur.4770180511.
Many of the measurement aspects of nursing research have been governed by rules regarding the minimum values of certain summary indexes (such as Cronbach's coefficient alpha and Cohen's kappa), the required numbers of subjects per item for factor analyses, and the like. In this article a case is made for violating these rules whenever the circumstances warrant such violations.
护理研究的许多测量方面都受某些汇总指标（如克朗巴哈系数α和科恩kappa系数）的最小值、因子分析中每个项目所需的受试者数量等规则的制约。本文提出，只要情况允许，就可以违反这些规则。
