Table 1.
Characteristics of DC Cohort at enrollment, Washington DC, 1999–2014
| Characteristic at enrollmenta | N (%) |
|---|---|
| All participants | 6506 (100) |
| Age | |
| <18 | 17 (0.26) |
| 18–29 | 693 (10.65) |
| 30–39 | 1134 (17.43) |
| 40–49 | 1945 (29.90) |
| 50–59 | 1948 (29.94) |
| 60+ | 769 (11.82) |
| Sex | |
| Female | 1702 (26.16) |
| Male | 4804 (73.84) |
| Race/ethnicity | |
| Non-Hispanic black | 4972 (76.42) |
| Non-Hispanic white | 904 (13.89) |
| Hispanic | 282 (4.33) |
| Other | 127 (1.95) |
| Unknown | 221 (3.40) |
| Transmission risk group | |
| Male-to-male sexual contact (MMS) | 2515 (38.66) |
| Heterosexual contact | 1995 (30.66) |
| Injection drug use (IDU) | 458 (7.04) |
| MMS/IDU | 80 (1.23) |
| Other | 121 (1.86) |
| Unknown/missing | 1337 (20.55) |
| Insurance | |
| Public | 4222 (64.89) |
| Private | 1767 (27.16) |
| Other | 131 (2.01) |
| Unknown | 386 (5.93) |
| Clinic type | |
| Hospital-based | 3136 (48.20) |
| Community-based | 3370 (51.80) |
| Clinical status | |
| HIV | 3798 (58.38) |
| AIDS | 2708 (41.62) |
| CD4 count (cells/µl) | |
| <50 | 158 (2.43) |
| 50–199 | 525 (8.07) |
| 200–349 | 938 (14.42) |
| 350–499 | 1285 (19.75) |
| ≥500 | 3349 (51.48) |
| Unknown | 251 (3.86) |
| Viral load (copies/ml) | |
| 0–399 | 4922 (75.65) |
| 400–999 | 186 (2.86) |
| 1000–9999 | 366 (5.63) |
| 10,000–49,999 | 362 (5.56) |
| 50,000–99,999 | 155 (2.38) |
| ≥100,000 | 250 (3.84) |
| Unknown | 265 (4.07) |
| Alcohol use | |
| Current | 915 (14.06) |
| Previous | 924 (14.20) |
| Never | 3038 (46.70) |
| Unknown | 1629 (25.04) |
| Recreational drug use | |
| Current | 774 (11.90) |
| Previous | 1416 (21.76) |
| Never | 2147 (33.00) |
| Unknown | 2169 (33.34) |
| Intravenous drug use | |
| Current | 45 (0.69) |
| Previous | 476 (7.32) |
| Never | 3132 (48.14) |
| Unknown | 2853 (43.85) |
| Characteristic at enrollmenta | Median (IQR) |
|---|---|
| HIV diagnosis to consent (years) | 9.3 (4.2–16.3) |
| HIV diagnosis to ART start (years) | 1.2 (0.1–6.2) |
| ART start to consent (years) | 3.6 (1.2–7.8) |
ART, antiretroviral treatment
aClinical characteristics at enrollment do not correspond to resistance results, which are based on tests performed at other times