Detection of Cyclic Trends in Incidence Data Using the Efficiency Score Method

✍ Scribed by Jun-Mo Nam

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 392 KB
• Volume: 38
• Category: Article
• ISSN: 0323-3847
• DOI: 10.1002/bimj.4710380604

✦ Synopsis

In studies involving a cyclic regularity, researchers usually have a good working knowledge regarding the peak t i m e in the cycle. Capitalizing on this information, we derive the asymptotically uniformly most powe@l unbiased test for detecting a cyclic rrend using the likelihood score, and present the asymptotic power function of the test and the approximate formula for sample size. Numerical studies demonstrate great advantages of the proposed test over the standard test in terms of power and sample size. Asymptotic power of the score test is satisfactorily close to actual power. We also generalize this method so that it is applicable for incidence data from unequally spaced intervals or risk populations of unequal size.