Simplified computation of the multivariate permutation test for arbitrarily censored survival data

Autor: Richard Marcuson
Rok vydání: 2007
Předmět:
Zdroj: Statistics in Medicine. 2:327-330
ISSN: 1097-0258
0277-6715
DOI: 10.1002/sim.4780020304
Popis: This paper points out that the permutational covariance matrix of the multivariate generalization of Gehan's test on censored survival data enjoys the useful property that a generalized inverse may be explicitly computed. This leads to an exceedingly simple formula for the test statistic. The ease of the resulting calculations is displayed with a brief example from exercise stress testing.
Databáze: OpenAIRE