Title: A Score Test for Non-informative Censoring using Doubly Sampled Grouped Survival Data.
Authors: Wax, Yohanan; Baker, Stuart G.
Abstract: A closed form score statistic for testing the assumption of non-informative censoring is proposed for situations in which a random subsample of the censored subjects is followed to determine failure times. The test is derived for grouped survival data under the assumption of a proportional odds model for the hazard rates of censoring. Extensions to a stratified sample are provided. An example is given in which the possible association of discharge time with post-surgical infection rates was investigated by using data from an Israeli study of hernia patients. The test showed that longer hospital stays were associated with higher infection rates.
Subjects: SURVIVAL analysis (Biometry); STATISTICAL sampling
Publication: Journal of the Royal Statistical Society: Series C (Applied Statistics), 1993, Vol 42, Issue 1, p159
ISSN: 0035-9254
Publication type: Academic Journal
DOI: 10.2307/2347418

A Score Test for Non-informative Censoring using Doubly Sampled Grouped Survival Data.

Wax, Yohanan; Baker, Stuart G.