Table 1 Demographic and behavioral characteristics at enrollmenta
| Â | Total | DMPA | LNG-IUD | ETG vaginal ring | p value |
|---|---|---|---|---|---|
Age | 23.0 (20.0–26.0) | 21.0 (19.0–25.0) | 25.0 (20.3–27.0) | 24.0 (19.0–27.5) | 0.313 |
Race | 0.784 | ||||
 White | 23/59 (39.0%) | 6/15 (40.0%) | 12/28 (42.9%) | 5/16 (31.3%) |  |
 Black | 6/59 (10.2%) | 1/15 (6.7%) | 4/28 (14.3%) | 1/16 (6.3%) | |
 Asian | 30/59 (50.8%) | 8/15 (53.3%) | 12/28 (42.9%) | 10/16 (62.5%) | |
Sexual frequency per weekb | 0.789 | ||||
 0 | 11/59 (18.6%) | 3/15 (20.0%) | 5/28 (17.9%) | 3/16 (18.8%) |  |
 1 | 23/59 (39.0%) | 4/15 (26.7%) | 13/28 (46.4%) | 6/16 (37.5%) | |
  ≥ 2 | 25/59 (42.4%) | 8/15 (53.3%) | 10/28 (35.7%) | 7/16 (43.8%) | |
Multiple sex partnersc | 0.806 | ||||
 Yes | 9/59 (15.3%) | 3/15 (20.0%) | 4/28 (14.3%) | 2/16 (12.5%) |  |
 No | 50/59 (84.7%) | 12/15 (80.0%) | 24/28 (85.7%) | 14/16 (87.5%) | |
Condom use | 0.698 | ||||
 Always | 11/59 (18.6%) | 4/15 (26.7%) | 5/28 (17.9%) | 2/16 (12.5%) |  |
 Sometimes | 25/59 (42.4%) | 7/15 (46.7%) | 10/28 (35.7%) | 8/16 (50.0%) | |
 Never | 23/59 (39.0%) | 4/15 (26.7%) | 13/28 (46.4%) | 6/16 (37.5%) | |