title: Nonidentified responses in a proportional hazards setting.
abstract: Nonidentified response (NR), an important form of nonindependent censoring, is modelled in a proportional hazards setting. Methods to test for existence of and identify NR censored observations are developed. Incorporation of NR censoring information into appropriate algorithms can improve parameter and underlying baseline hazard estimation. Application to estimating time until death from AIDS is made.
authors.affiliation: Department of Epidemiology, Johns Hopkins University, School of Hygiene and Public Health, Baltimore, Maryland 21205.
authors.forename: D R
authors.initials: DR
authors.lastname: Hoover
authors.forename: Y
authors.initials: Y
authors.lastname: He
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000097:blood / Q000276:immunology / Q000401:mortality; D000465:Algorithms; D015142:Baltimore / Q000453:epidemiology; D001699:Biometry / Q000379:methods*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D015497:HIV-1; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D011336:Probability; D016016:Proportional Hazards Models; D016019:Survival Analysis; D013997:Time Factors