title: Human immunodeficiency virus type 1 infection: relationship of risk group and age to rate of progression to AIDS. Transfusion Safety Study Group.
abstract: Age differences among risk groups may account for rate differences in progression of human immunodeficiency virus type 1 (HIV-1) infection to AIDS. Institutions in 6 US cities used a common protocol to study infected homosexual blood donors, recipients of blood components, and factor VIII-treated hemophiliacs. Follow-up was every 6 months. Actuarial risk for AIDS 8 years after infection was 51% among blood recipients, 36% among homosexual donors, and 24% among hemophiliacs. Significant risk group differences were explained by age differences among cohorts (medians of 61, 29, and 22 years, respectively). When age was adjusted for and both CD4 cell value and zidovudine treatment were used as time-dependent covariates, homosexual donors had more rapid progression than the other groups. Omitting Kaposi's sarcoma as an AIDS-defining condition removed any significant differences among risk groups except CD4 cell count and age. Thus, major factors in AIDS progression are age-related.
authors.affiliation: Department of Medicine, University of Southern California, Los Angeles, USA.
authors.forename: E A
authors.initials: EA
authors.lastname: Operskalski
authors.forename: D O
authors.initials: DO
authors.lastname: Stram
authors.forename: H
authors.initials: H
authors.lastname: Lee
authors.forename: Y
authors.initials: Y
authors.lastname: Zhou
authors.forename: E
authors.initials: E
authors.lastname: Donegan
authors.forename: M P
authors.initials: MP
authors.lastname: Busch
authors.forename: C E
authors.initials: CE
authors.lastname: Stevens
authors.forename: E R
authors.initials: ER
authors.lastname: Schiff
authors.forename: S L
authors.initials: SL
authors.lastname: Dietrich
authors.forename: J W
authors.initials: JW
authors.lastname: Mosley
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology / Q000503:physiopathology*; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D016913:Blood Component Transfusion; D001782:Blood Donors; D005260:Female; D005500:Follow-Up Studies; D015658:HIV Infections / Q000453:epidemiology* / Q000503:physiopathology / Q000635:transmission; D015497:HIV-1; D006467:Hemophilia A / Q000628:therapy; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D013997:Time Factors