Testing for Between-Group Differences in Within-Group Interrater Agreement
提出了F检验和基于O'Brien检验的稳健方法,用于比较两个或多个组在组内一致性指标(如r_wg)上的差异,并讨论了在同时比较均值差异时如何解读一致性统计量的异同。
Users of r wg may find situations where they want to compare the levels of within-group agreement across two or more groups. F tests are presented that compare two values of r wg , rwg(J), or r* wg(J) , and recommendations are made for comparing pairwise group values for three or more groups with a control for alpha inflation. More robust and flexible methods based on O'Brien's test are then recommended when sufficient raw data are available. The meaning of findings that agreement statistics are either the same or different across groups is discussed in light of simultaneous comparisons of mean differences. Examples are shown to demonstrate the robust methods using employee responses to questions regarding climate perceptions of organizational support for employee development activities. Other scenarios where the F test may prove useful are discussed, and directions for future research are provided.