Table 1 Baseline characteristics of 3708 participants of Women Interagency HIV Study, stratified by HIV status at baseline
From: Longitudinal determinants of anal intercourse among women with, and without HIV in the United States
Total N (%) or median (IQR) | WLHIV N (%) or median (IQR) | Women without HIV N (%) or median (IQR) | ||
|---|---|---|---|---|
TOTAL | N = 3708 | N = 2704 | N = 1004 | |
Years of follow-up | Median (IQR) | 9.0 (3.0–16.5) | 8.0 (3.0–16.5) | 13.0 (3.0–17.5) |
Recruitment wave | First (1994) | 1717 (46.3%) | 1325 (49.0%) | 392 (39.0%) |
Second (2001–02) | 884 (22.8%) | 547 (20.2%) | 297 (29.6%) | |
Third (2011–12) | 328 (8.9%) | 240 (8.9%) | 88 (8.8%) | |
Fourth (2013–15) | 819 (22.1%) | 592 (21.9%) | 227 (22.6%) | |
Site | Atlanta, GAa | 265 (7.1%) | 180 (6.7%) | 85 (8.5%) |
Birmingham, ALa | 111 (3.0%) | 84 (3.1%) | 27 (2.7%) | |
Bronx, NY | 736 (19.8%) | 528 (19.5%) | 208 (20.7%) | |
Brooklyn, NY | 616 (16.6%) | 458 (15.7%) | 158 (15.7%) | |
Chapel Hill, NCa | 190 (5.1%) | 141 (5.2%) | 49 (4.9%) | |
Chicago, IL | 546 (14.7%) | 425 (15.7%) | 121 (12.1%) | |
Jackson, MSa | 111 (3.0%) | 83 (3.1%) | 28 (2.8%) | |
Los Angeles, CAb | 9 (0.2%) | 8 (0.3%) | 1 (0.1%) | |
Miami, FLa | 142 (3.8%) | 104 (3.9%) | 38 (3.8%) | |
San Francisco, CA | 419 (11.3%) | 285 (10.5%) | 134 (13.3%) | |
Washington, DC | 563 (15.2%) | 408 (15.1%) | 155 (15.4%) | |
Age in years | Median (IQR) | 37 (31–44) | 37 (31–44) | 36 (28–43) |
Race and ethnicity | Non-Hispanic Black | 2562 (69.1%) | 1878 (69.5%) | 684 (68.1%) |
Hispanic/Latina | 606 (16.3%) | 436 (16.1%) | 170 (16.9%) | |
Non-Hispanic White | 427 (11.5%) | 319 (11.8%) | 108 (10.8%) | |
Other | 113 (3.1%) | 71 (2.6%) | 42 (4.2%) | |
Sexual orientation | Heterosexual | 3221 (86.9%) | 2397 (88.6%) | 824 (82.1%) |
Bisexual | 292 (7.8%) | 183 (6.8%) | 109 (10.9%) | |
Lesbian | 151 (4.1%) | 96 (3.4%) | 55 (5.5%) | |
Missing | 44 (1.2%) | 28 (1.0%) | 16 (1.6%) | |
Education | < High school | 1274 (34.4%) | 948 (35.1%) | 326 (32.5%) |
≥ High school | 2432 (66.6%) | 1755 (64.9%) | 677 (67.4%) | |
Missing | 2 (0.5%) | 1 (0.3%) | 1 (0.1%) | |
Marital status | Married or living with partner | 1269 (34.2%) | 1753 (64.8%) | 332 (33.1%) |
Not married or living with partner | 2423 (65.3%) | 937 (34.7%) | 670 (66.7%) | |
Missing | 16 (0.4%) | 14 (0.5%) | 2 (0.2%) | |
Household annual income | < $12,000 | 2063 (55.6%) | 1530 (56.6%) | 553 (53.1%) |
≥ $12,000 | 1530 (41.3%) | 1098 (40.6%) | 432 (43.0%) | |
Missing | 115 (3.1%) | 76 (2.8%) | 39 (3.9%) | |
Employed | Yes | 1084 (29.2%) | 737 (27.3%) | 347 (34.6%) |
No | 2.615 (70.5%) | 1961 (72.5%) | 654 (65.1%) | |
Missing | 9 (0.2%) | 6 (0.2%) | 3 (0.3%) | |
Physical violence victimization, everc | Yes | 1811 (48.8%) | 1302 (48.2%) | 509 (50.7%) |
No | 1512 (40.8%) | 1123 (41.5%) | 389 (38.7%) | |
Missing | 385 (10.4%) | 279 (10.3%) | 106 (10.6%) | |
Sexual violence victimization, everc | Yes | 1324 (35.7%) | 970 (35.9%) | 354 (35.3%) |
No | 1984 (53.5%) | 1444 (53.4%) | 540 (53.8%) | |
Missing | 400 (10.8%) | 290 (10.7%) | 110 (11.0%) | |
Injection drug use, ever | Yes | 881 (23.8%) | 693 (25.6%) | 188 (18.7%) |
No | 2826 (76.2%) | 2010 (74.3%) | 816 (81.3%) | |
Missing | 1 (0.0%) | 1 (0.0%) | 0 (0.0%) | |
Number of male sex partners, ever | Median (IQR) | 10 (5–40) | 10 (5–40) | 12 (6–35) |
Missing | N = 54 | N = 46 | N = 8 | |
Number of female sex partners, ever | 0 | 2730 (73.6%) | 2034 (75.2%) | 696 (69.3%) |
≥ 1 | 962 (25.9%) | 656 (24.3%) | 306 (30.5%) | |
Missing | 16 (0.4%) | 14 (0.5%) | 2 (0.2%) | |
Anal intercourse, everd | Yes | 1376 (37.1%) | 990 (36.6%) | 386 (38.4%) |
No | 1802 (48.6%) | 1270 (47.0%) | 532 (53.0%) | |
Missing | 530 (14.3%) | 444 (16.4%) | 86 (8.6%) | |
Exchange sex, ever | Yes | 1337 (36.1%) | 979 (36.2%) | 358 (35.7%) |
No | 2360 (63.6%) | 1716 (63.2%) | 644 (64.1%) | |
Missing | 12 (0.2%) | 9 (0.3%) | 2 (0.2%) |