Table 1. Characteristics, behaviors, and HIV infection prevalence among the homeless, Tehran, Iran, 2007-2008.
| Variables | N1 (%) | HIV infection (N) | HIV infection prevalence% (95% CI) | |
| Total | 10 657 (100) | 178 | 1.7 (1.4 -1.9) | |
| Gender2 | Male | 9 622 (90.3) | 175 | 1.8 (1.6-2.1) |
| Female | 1 035 (9.7) | 3 | 0.3 (0.06-0.8) | |
| Age groups2 | <25 yrs | 950 (9.0) | 8 | 0.8 (0.4-1.6) |
| 25-40 yrs | 4 328 (41.2) | 89 | 2.0 (1.6-2.5) | |
| 40-55 yrs | 3 292 (31.4) | 66 | 2.0 (1.5-2.5) | |
| 55-70 yrs | 1 255 (12.0) | 12 | 0.9 (0.5-1.7) | |
| ≥70 yrs | 668 (6.4) | 0 | 0.0 (0.0-0.5)3 | |
| Birthplace | Tehran | 6 231 (58.5) | 107 | 1.7 (1.4-2.1) |
| Other | 4 426 (41.5) | 71 | 1.6 (1.2-2.0) | |
| Education level2 | Illiterate | 4 342 (40.7) | 48 | 1.1 (0.8-1.5) |
| Primary | 2 197 (20.6) | 43 | 1.9 (1.4-2.6) | |
| Junior high school | 2 099 (19.7) | 44 | 2.1 (1.5-2.8) | |
| Senior high school and college | 1 888 (17.7) | 42 | 2.2 (1.6-3.0) | |
| Bachelor and higher | 131 (1.3) | 1 | 0.8 (0.02-4.2) | |
| Marital status4 | Single | 5195 (48.7) | 81 | 1.5 (1.2-1.9) |
| Married | 2 974 (27.9) | 44 | 1.5 (1.1-2.0) | |
| Separated | 951 (8.9) | 28 | 2.9 (2.0-4.2) | |
| Divorce | 913 (8.6) | 18 | 2.0 (1.2-3.1) | |
| Widow | 624 (5.9) | 7 | 1.1 (0.4-2.3) | |
| Occupation2 | Unemployed | 5 403 (50.7) | 112 | 2.1 (1.7-2.5) |
| Employed | 5 254 (49.3) | 66 | 1.2 (1.0-1.6) | |
| Nationality | Iran | 10 464 (98.2) | 177 | 1.7 (1.4-1.9) |
| Other | 193 (1.8) | 1 | 0.5 (0.01-2.8) | |
| Parents | Alive | 4 413 (41.4) | 67 | 1.5 (1.2-1.9) |
| Dead | 6 243 (58.6) | 111 | 1.8 (1.5-2.1) | |
| Life condition2 | Alone | 6 780 (63.6) | 134 | 2.0 (1.6-2.3) |
| Along with family or friend | 3 877 (36.4) | 44 | 1.1 (0.8-1.5) | |
| Relation with family2 | No | 6 272 (58.8) | 127 | 2.0 (1.7-2.4) |
| Yes | 4 385 (41.2) | 51 | 1.2 (0.9-1.5) | |
| Family support4 | No | 10 115 (94.9) | 175 | 1.7 (1.5-2.0) |
| Yes | 542 (5.1) | 3 | 0.5 (0.1-1.6) | |
| Relation with friends5 | No | 6 996 (65.6) | 128 | 1.8 (1.5-2.2) |
| Yes | 3 661 (34.4) | 50 | 1.4 (1.0-1.8) | |
| Status of drug abuse2 | No | 4 381 (41.1) | 18 | 0.4 (0.2-0.6) |
| Injection | 3 044 (28.6) | 113 | 3.7 (3.1-4.4) | |
| Non-injection | 3 232 (30.3) | 47 | 1.4 (1.1-1.9) | |
| History of hospitalization5 | No | 10 471 (98.2) | 178 | 1.7 (1.5-2.0) |
| Yes | 186 (1.8) | 0 | 0.0 (0.0-2.0)3 | |
1: Subgroups do not always add up to total due to missing data.
2: P≤0.002, 3: One-sided 97.5% CI, 4: P≤0.05, 5: P=0.08.