Table 1. Characteristics of eligible individuals at the time of HIV diagnosis.
| Characteristics at Diagnosis | Study Population |
|---|---|
| Sex, n(%) | |
| Male | 1002 (80.0) |
| Female | 251 (20.0) |
| Ethnicity, n(%) | |
| Non-White | 281 (22.4) |
| White | 414 (33.0) |
| Unknown | 558 (44.5) |
| HIV Acquisition Risk Group, n(%) | |
| gbMSM | 457 (36.5) |
| PWID | 489 (39.0) |
| gbMSM/PWID | 103 (8.2) |
| Heterosexual | 182 (14.5) |
| Other/Unknown | 22 (1.8) |
| AIDS Defining Illness, n(%) | |
| No | 1216 (97.0) |
| Yes | 37 (3.0) |
| Year of diagnosis, n(%) | |
| <1996 | 67 (5.4) |
| 1996–1999 | 264 (21.1) |
| 2000–2003 | 415 (33.1) |
| 2004–2007 | 251 (20.0) |
| 2008–2013 | 256 (20.4) |
| Age (years) | |
| Median (Q1-Q3) | 37.7 (31.2–45.1) |
| CD4 cell count (cells/mm3) | |
| Median (Q1-Q3) | 450 (320–610) |
| Viral load (log10 copies/mL) | |
| Median (Q1-Q3) | 4.6 (4.0–5.0) |
| Follow-up time (years) | |
| Median (Q1-Q3) | 2.1 (1.1–4.0) |
| Number of 6-month intervals for CD4 measurements | |
| Median (Q1-Q3) | 5.0 (3.0–9.0) |
Abbreviations: gbMSM—gay, bisexual and other men who have sex with men; PWID—people who have ever injected drugs; Q1-Q3 - 25th-75th percentiles.