Artigo
Tests of proportional hazards and proportional odds models for grouped survival data
Fecha
2000-12-01Registro en:
Biometrics. Washington: International Biometric Soc, v. 56, n. 4, p. 1233-1240, 2000.
0006-341X
10.1111/j.0006-341X.2000.01233.x
WOS:000165872600038
Autor
Universidade Federal de Minas Gerais (UFMG)
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Resumen
In this paper, we derive score test statistics to discriminate between proportional hazards and proportional odds models for grouped survival data. These models are embedded within a power family transformation in order to obtain the score tests. In simple cases, some small-sample results are obtained for the score statistics using Monte Carlo simulations. Score statistics have distributions well approximated by the chi-squared distribution. Real examples illustrate the proposed tests.