Clinical Manifestations and Predictors of Disease Progression in Drug Users with Human Immunodeficiency Virus Infection

Abstract

To examine the clinical course of human immunodeficiency virus (HIV) infection in injection-drug users, we conducted a prospective study of a cohort of patients in a methadone-treatment program in New York City from July 1985 through December 1990. The patients underwent standardized evaluations at base line and semiannually thereafter and received on-site primary medical care. Rates of progression to the acquired immunodeficiency syndrome (AIDS) and major outcomes before the development of AIDS were examined by univariate analyses; the risk of AIDS was also assessed by product-limit survival analysis and proportional-hazards regression.