The CHAIN project was a longitudinal cohort study of people living with HIV in New York City,
which was recruited in 1994 from a large number of medical care and social service agencies
serving HIV in New York City. This subset of data pertain to the sixth round of interviews.
Usage
data(CHAIN)
Format
A data.frame with 532 observations on the following 8 variables.
log_virus
log of self reported viral load level, where zero represents an undetectable level.
age
age at time of the interview
income
annual family income in 10 intervals
healthy
a continuous scale of physical health with a theoretical range between 0 and 100 where
better health is associated with higher scale values
mental
a binary measure of poor mental health ( 1=Yes, 0=No )
damage
ordered interval for the CD4 count, which is an
indicator of how much damage HIV has caused to the immune system
treatment
a three-level ordered variable:
0=Not currently taking HAART (Highly Active AntiretRoviral Therapy)
1=taking HAART but nonadherent,
2=taking HAART and adherent
Details
A missing value in the log virus load level
was assigned to individuals who either could not recall
their viral load level, did not have a viral load test in the six month
preceding the interview, or reported their viral loads as "good" or "bad".
Source
http://cchps.columbia.edu/research.cfm
References
Messeri P, Lee G, Abramson DA, Aidala A, Chiasson MA, Jones JD. (2003).
“Antiretroviral therapy and declining AIDS mortality in New York City”.
Medical Care 41:512–521.