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M94A3210.TXT
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1994-10-25
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Document 3210
DOCN M94A3210
TI Is the cofactor associated with Kaposi's sarcoma in HIV infected
homosexual men declining over time?
DT 9412
AU Veugelers PJ; Strathdee SA; Moss AR; Page KA; Tindall B; Schechter MT;
Coutinho RA; van Griensven GJ; Municipal Health Service, Dept of Public
Health, Amsterdam, The; Netherlands.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):128 (abstract no. PA0132). Unique
Identifier : AIDSLINE ICA10/94369365
AB OBJECTIVE: A decline in the proportion of Kaposi's sarcoma (KS) among
incident AIDS cases has been reported. This has led to suggestions
regarding a decreasing exposure to an hypothesized agent. However,
recent studies show that the incidences of KS has remained relatively
stable since the beginning of the epidemic. We aimed to studied this
paradox by examining progression rates of KS relative to other AIDS
conditions (nonKS-AIDS) among 407 homosexual men with documented dates
of seroconversion in cohorts in Vancouver, Sydney, Amsterdam and San
Francisco. METHODS: We performed a simulation to evaluate the
proportionality of the incidence rates of KS relative to nonKS-AIDS.
Additionally, we performed Kaplan-Meier and Cox proportional hazards
analyses to determine whether progression rates of KS were different
among recently infected men relative to men who became infected earlier
in the epidemic. RESULTS: Among the 407 seroconverters, 139 (34%) were
diagnosed with AIDS. 37 of whom had KS. Progression rates of KS and
nonKS-AIDS were not proportional and were mediated by different factors.
During the first years following seroconversion the probability of
developing KS was elevated, whereas in later stages the opposite was
observed. Recent seroconverters did not demonstrate a slower progression
rate to KS' relative to earlier seroconverters. CONCLUSIONS: Our data
suggest that the decline in the proportion of KS among incident AIDS
cases is an artifact arising from non-proportionality. While our data do
not argue for or against the existence of cofactor(s) in the etiology of
KS, they do not support earlier suggestions that exposure to such
factor(s) is declining over time.
DE Acquired Immunodeficiency Syndrome/*COMPLICATIONS/EPIDEMIOLOGY Cohort
Studies Follow-Up Studies *Homosexuality Human HIV Seropositivity
Incidence Male Probability Proportional Hazards Models Sarcoma,
Kaposi's/*EPIDEMIOLOGY/*ETIOLOGY Survival Analysis MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).