期刊
JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION
卷 78, 期 11, 页码 969-981出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10629360601026386
关键词
Difference of proportions; Equivalence of proportions; Exact confidence intervals; Exact tests; Non-inferiority; Power; Unconditional tests; 2 x 2 tables
资金
- Ministerio de Educacion y Ciencia, Spain, [MTM2004- 00989]
- Consejeria de Innovacion, Ciencia y Empresa, Junta de Andaluc a, Spain [FQM- 0235]
In order to compare two independent proportions (p(1) and p(2)) there are several useful tests for the parameter d = p(2) - p(1) : H-SG : d <= delta vs. K-SG : d > delta, H-SG2 : d = delta vs. K-SG2 : d not equal delta (where -1 < delta < +1), H-SD : vertical bar d vertical bar <= Delta vs. K-SD : vertical bar d vertical bar > Delta (where Delta >= 0) and H-PE : vertical bar d vertical bar >= Delta vs. K-PE : vertical bar d vertical bar < Delta (where Delta > 0). The exact unconditional test requires an ordering statistic, which is usually the z-pooled statistic, to be defined. The paper gives the definition of 10 new ordering statistics with a similar computational time, and compares the number of points which each introduces into the critical region obtained to error alpha = 5%. The article reaches the conclusion that the most generally powerful statistics are: the z-pooled one with a small continuity correction (c = 1/N if n(1) not equal n(2) or c = 2/N if n(1) = n(2), where N = {n(1)+1} {n(2) +1} and n(i) are the sample sizes) and those z-pooled with Yates' continuity correction (c = {n(1) +n(2)}/{2n(1)n(2)}). In this paper the author also showed that Barnard's two classic convexity conditions are redundant, because when one of them is verified the other is also verified. The programs for these tests may be obtained free of charge from the site http://www.ugr.es/local/bioest/software.htm.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据