| Literature DB >> 7115873 |
Abstract
A method is developed for the use of historical control information in testing for a trend with Poisson data. The resulting test statistic is a modification of a statistic proposed by Armitage (1955, Biometrics 11, 375-386) to test for a trend in frequencies. The contribution of the historical control data in the analysis depends upon the degree of heterogeneity of the historical counts.Mesh:
Substances:
Year: 1982 PMID: 7115873
Source DB: PubMed Journal: Biometrics ISSN: 0006-341X Impact factor: 2.571