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M94A2338.TXT
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1994-10-25
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Document 2338
DOCN M94A2338
TI Differential survival of AIDS patients according to the 1987 and the
1993 CDC case definitions.
DT 9412
AU Vella S; Chiesi A; Floridia M; Giuliano M; Volpi A; Dally LG; Binkin N;
Istituto Superiore di Sanita Rome, Italy.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):327 (abstract no. PC0240). Unique
Identifier : AIDSLINE ICA10/94370237
AB OBJECTIVE. To evaluate the impact of the 1993 CDC HIV classification
system versus the 1987 definition on the number of cases and on survival
of AIDS patients through the retrospective analysis of data from a
prospective cohort study of patients treated with zidovudine. A total of
3515 patients enrolled in the National Registry of zidovudine-treated
patients between July 1987 and December 1991 were analysed. RESULTS. We
compared numbers and survival probability estimates (using the
Kaplan-Meier method) for patients satisfying the 1993 CDC case
definition compared to patients fulfilling the 1987 CDC classification.
According to the new classification system the number of AIDS cases in
the study population would increase by 188%. While the median survival
of patients meeting the 1987 definition was 24 months, at the end of 57
months 47% of patients meeting the 1993 definition were still alive.
Among the patients meeting the laboratory criteria for AIDS diagnosis
using the new definition (CD4+ count < 200), the presence of an
AIDS-defining illness was a strong independent predictor of death.
CONCLUSIONS. The application of the new definition results in a
considerable increase in the number of cases. Survival of patients
classified according to the 1993 definition is much longer than for
those classified with the 1987 definition. Clinical status plays a major
role in predicting survival outcome among patients whose CD4+ levels
meet the new case definition.
DE Acquired Immunodeficiency Syndrome/CLASSIFICATION/DRUG THERAPY/
*MORTALITY Cohort Studies Human HIV Infections/CLASSIFICATION/DRUG
THERAPY/*MORTALITY Italy/EPIDEMIOLOGY Leukocyte Count Prospective
Studies Registries/STATISTICS & NUMER DATA Retrospective Studies
Survival Rate T4 Lymphocytes/IMMUNOLOGY Zidovudine/THERAPEUTIC USE
MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).