Table 1.
Demographic characteristics of the study participants.
| HIV negative |
HIV positive |
|||||
|---|---|---|---|---|---|---|
| Young | Middle | Old | Young | Middle | Old | |
| Number | 48 | 62 | 51 | 34 | 70 | 50 |
| Sex (M/F) | 27/21 | 35/27 | 32/19 | 20/14 | 38/32 | 34/16 |
| Mean age in years (range) | 29.9 (19–39) | 51.4 (41 −59) | 65.7 (60–83) | 30 (19–39) | 51.5 (41–59) | 65 (60–77) |
| Ethnicity, n (%) | ||||||
| Hispanic/Latino | 19 (40) | 21 (34) | 20 (39) | 16 (47) | 17 (25) | 14 (28) |
| Non-Hispanic/non-Latino | 27 (56) | 38 (61) | 27 (53) | 17 (50) | 52 (74) | 32 (64) |
| Not specified | 2 (4) | 3 (5) | 4 (8) | 1 (3) | 1 (1) | 4 (8) |
| Race, n (%) | ||||||
| White | 24 (50) | 28 (45) | 28 (55) | 13 (38) | 18 (26) | 15 (30) |
| Black | 18 (38) | 32 (51) | 18 (35) | 18 (53) | 50 (71) | 35 (70) |
| Asian | 5 (10) | 1 (2) | 5 (10) | 0 | 0 | 0 |
| Not specified | 1 (2) | 1 (2) | 0 | 3 (9) | 2 (3) | 0 |
| Mean absolute counts (cells/μl) | ||||||
| CD45 | 3722 | 2982 | 3441 | 3774 | 3135 | 3119 |
| CD3 | 2557 | 2088 | 2296 | 2645 | 2206 | 2249 |
| CD8+ | 845 | 641 | 805 | 1205a | 1043a | 1167a |
| CD4+ | 1531 | 1308 | 1333 | 1272 | 984a,b | 872a,b |
| CD4+/CD8+ ratio | 1.8 | 2 | 1.6 | 1a | 0.94a,b | 0.74a,b |
| pVL (copies/ml) | ND | ND | ND | <40 | <40 | <40 |
ND, not done; pVL, plasma virus load.
a
vs. Corresponding HIV− groups.
b
vs. Young HIV+ group (P<0.05).