This dataset is from the Baltimore site of the Multi-center AIDS Cohort Study (BMACS), which included 400 homosexual men who were infected by the human immunodeficiency virus (HIV) between 1984 and 1991.
data(BMACS)A data frame with 1817 rows and 6 variables.
ID. Subject ID
Time. Subject's study visit time
Smoke. Cigarette baseline smoking status
age. Age at study enrollment
preCD4. Pre-infection CD4 percentage
CD4. CD4 percentage at the time of visit
Kaslow, R. A., Ostrow, D. G., Detels, R., Phair, J. P., Polk, B. F. and Rinaldo, C. R. The Multicenter AIDS Cohort Study: rationale, organization and selected characteristics of the participants. American Journal of Epidemiology, 126:310-318, 1987.