Table 1. Demographic characteristics of the study population stratified by index cases, HIV uninfected partners and HIV infected unpartnered individuals (n = 500).
| Characteristic | Total | Couples (+) HIV |
Couples (-) HIV |
Single individuals | P* |
|---|---|---|---|---|---|
| N° (%) | |||||
| n = 500 | n = 200 | n = 200 | n = 100 | ||
| Age, years (1) | 39.9 ± 11.2 (18–73) |
38.2 ± 9.8 (18–66) |
39.9 ± 11.9 (18–73) |
43.4 ± 11.5 (21–70) |
<0.01 |
| Age over 30 years | 413 (82.6) | 161 (80.5) | 163 (81.5) | 89 (89.0) | 0.16 |
| Female | 268 (53.6) | 140 (70,0) | 60 (30.0) | 68 (68,0) | <0.01 |
| Race/ethnicity | n = 499 | n = 200 | n = 199 | n = 100 | |
| White | 312 (62.5) | 119 (59.5) | 129 (64.8) | 64 (64.0) | 0.45 |
| Brown | 76 (15.2) | 28 (14.0) | 31 (15.6) | 17 (17.0) | |
| Black | 111 (22.2) | 53 (26.5) | 39 (19.6) | 19 (19.0) | |
| Education | n = 498 | n = 199 | n = 199 | n = 100 | |
| EF (2) | 262 (52.6) | 110 (55.3) | 96 (48.2) | 56 (56.0) | 0.28 |
| > EM (3) | 236 (47.4) | 89 (44.7) | 103 (51.8) | 44 (44.0) | |
| Origin | n = 426 | n = 173 | n = 173 | n = 80 | |
| Porto Alegre | 269 (63.1) | 108 (62.4) | 108 (62.4) | 53 (66.3) | 0.82 |
| Other cities | 157 (36.9) | 65(37.6) | 65(37.6) | 27 (33.8) | |
| Presence of Personal Income (n = 500) | n = 500 382 (76.4) |
n = 200 142 (71.0) |
n = 200 156 (78.0) |
n = 100 84 (84.0) |
0.03 |
| n = 389 | n = 145 | n = 160 | n = 84 | ||
| Monthly Family income, in reais(4) (range) |
1,500.00 (0–40,000.00) |
1,700.00 (0–22,000.00) |
1,600.00 (77–40,000.00) |
1,000.00 (256.00–10,000.00) |
<0.01 |
| Q1,Q3 | 1,000.00; 2,500.00 | 1,000.00; 3,000.00 | 1,000.00; 2,950.00 | 788.00; 2,000.00 | |
| Number of biological children | n = 500 | n = 200 | n = 200 | n = 100 | |
| No children | 96 (19.2) | 31 (15.5) | 39 (19.5) | 26 (26.0) | 0.07 |
| 1 to 2 | 242 (48.4) | 92 (46.0) | 104 (52.0) | 46 (46.0) | |
| 3 or more | 162 (32.4) | 77 (38.5) | 57 (28.5) | 28 (28.0) |
* The 3 independent groups (HIV+ individual in couples, HIV-individual in couples, and unpartnered HIV+ individuals) were compared using the following tests: Pearson’s Chi square test for comparison of frequency distributions; ANOVA One Way test for comparison of means; Non-parametric Kruskal-Wallis test for comparison of median family income.
(1) Results expressed in mean ± standard deviation (range);
(2)EF = incomplete or complete elementary school;
(3)EM = incomplete or complete high school;
(4)Results expressed in median (range); Q1, Q3 (interquartile 25 and 75).