共 50 条
- [1] SAMPLE-SIZE AND POWER IN PSYCHIATRIC RESEARCH CANADIAN JOURNAL OF PSYCHIATRY-REVUE CANADIENNE DE PSYCHIATRIE, 1990, 35 (07): : 616 - 620
- [2] SAMPLE-SIZE AND STATISTICAL POWER IN REPRODUCTIVE RESEARCH OBSTETRICS AND GYNECOLOGY, 1995, 86 (02): : 302 - 305