Table 1.
Demographic Characteristics of Study Subjects
| Characteristic | Group 1, 40% ID (n = 66) | Group 2, 20% ID (n = 66) | Group 3, 100% IM (n = 66) | Group 4, 40% IM (n = 33) | P Value |
|---|---|---|---|---|---|
| Age, y | |||||
| Mean ± SD | 45 ± 10 | 45 ± 11 | 46 ± 11 | 46 ± 11 | .96 |
| Range | 24–61 | 23–70 | 21–63 | 21–63 | |
| Female sex | 36 (24) | 36 (24) | 32 (21) | 21 (7) | .42 |
| Race | .68 | ||||
| White | 29 (19) | 26 (17) | 29 (19) | 33 (11) | |
| Black | 71 (47) | 73 (48) | 71 (47) | 64 (21) | |
| Other | 0 (0) | 2 (1) | 0 (0) | 3 (1) | |
| Born in the US | 98 (65) | 95 (63) | 91 (60) | 94 (31) | .38 |
| Lived or traveled internationally | 27 (18) | 29 (19) | 44 (29) | 36 (12) | .16 |
| Received all childhood vaccines | 97 (64) | 97 (64) | 91 (60) | 94 (31) | .43 |
| Year of HIV infection diagnosis, meana | 2001 | 2002 | 2001 | 2001 | .90 |
| Currently receiving ART | 97 (64) | 97 (64) | 100 (66) | 100 (33) | .90 |
| CD4+ T-cell count in cells/mm3, mean ± SD | |||||
| Most recent | 669 ± 361 | 630 ± 331 | 676 ± 354 | 569 ± 260 | .44 |
| Lowest in the medical record | 328 ± 269 | 287 ± 221 | 294 ± 294 | 322 ± 260 | .8 |
| Most recent HIV load (copies/mL), mean ± SD | 111 ± 95 | 82 ± 86 | 85 ± 78 | 99 ± 69 | .67 |
| Diagnosis of AIDS in the record | 58 (38) | 50 (33) | 59 (39) | 52 (17) | .69 |
| Ever homeless | 39 (26) | 33 (22) | 21 (14) | 21 (7) | .08 |
| Current smoker | 58 (38) | 47 (31) | 35 (23) | 39 (13) | .06 |
| Coinfected with hepatitis C virus | 18 (12) | 15 (10) | 9 (6) | 15 (5) | .48 |
| Coinfected with hepatitis B virus | 11 (7) | 6 (4) | 3 (2) | 0 (0) | .29 |
| History of hypertension | 42 (28) | 38 (25) | 42 (28) | 45 (15) | .89 |
| History of depression or bipolar disorder | 33 (22) | 33 (22) | 29 (19) | 27 (9) | .87 |
| IPV lot no. received | .92 | ||||
| H1452–1 | 9 (6) | 9 (6) | 14 (9) | 12 (4) | |
| H1604–1 | 29 (19) | 26 (17) | 21 (14) | 21 (7) | |
| H1605–2 | 62 (41) | 65 (43) | 65 (43) | 67 (22) |
Data are % (no.) of subjects, unless otherwise indicated.
Abbreviations: ART, antiretroviral therapy; HIV, human immunodeficiency virus; ID, intradermal; IM, intramuscular; IPV, inactivated polio vaccine; SD, standard deviation.
a The SD for groups 1–3 was 8 years, and the SD for group 4 was 9 years.