Table 3.
Percentages of visits in which various sexual practices since last visit were reported, by trajectory group
| Behavior reported since last visit | Group 1: AI &VI persistors % (95% CI) | Group 2: AI & VI desistors % (95% CI) | Group 3: VI persistors % (95% CI) | Group 4: VI desistors % (95% CI) | Group 5: AI & VI inactives % (95% CI) |
|---|---|---|---|---|---|
| At all visits | Nv = 1,660 | Nv = 4,458 | Nv = 10,622 | Nv = 4,231 | Nv = 2,680 |
| AI | 46.4% (43.9–48.8) | 6.9% (6.2–7.7) | 3.8% (3.4–4.2) | 1.7% (1.3–2.1) | 0.4% (0.2–0.7) |
| VI | 93.8% (92.7–95.0) | 66.5% (65.1–67.9) | 92.2% (91.6–92.7) | 43.2% (41.7–44.7) | 8.0% (7.0–9.0) |
| Any male sex partner | 95.6% (94.6–96.6) | 68.0% (66.6–69.3) | 93.2% (92.7–93.7) | 44.9% (43.4–46.4) | 9.3% (8.2–10.4) |
| Any female sex partner | 7.7% (6.4–9.0) | 2.5% (2.0–3.0) | 3.0% (2.6–3.3) | 8.2% (7.3–9.0) | 39.8% (37.8–41.6) |
| Multiple male sex partners (2+) | 40.1% (37.8–42.5) | 15.5% (14.5–16.6) | 21.9% (21.1–22.6) | 8.1% (7.3–8.9) | 2.5% (1.9–3.1) |
| Exchange sex | 13.6% (11.9–15.2) | 3.0% (2.5–3.5) | 3.8% (3.4–4.2) | 2.1% (1.7–2.6) | 1.1% (0.7–1.5) |
| At visits with male sex partner(s) reported | Nv = 1,587 | Nv = 3,030 | Nv = 9,896 | Nv = 1,898 | Nv = 248 |
| AI | 48.5% (46.0–51.1) | 10.3% (9.2–11.4) | 4.1% (3.7–4.5) | 3.9% (3.0–4.8) | 6.1% (2.7–9.5) |
| VI | 98.2% (97.5–98.9) | 98.5% (98.1–99.0) | 99.0% (98.8–99.2) | 98.1% (97.5–98.7) | 94.2% (91.2–97.3) |
| At visits with AI practice reported | Nv = 735 | Nv = 297 | Nv = 382 | Nv = 69 | Nv = 12 |
| Consistent condom use during AI | 24.8% (21.6–27.9) | 31.3% (26.0–36.6) | 21.7% (17.6–25.9) | 36.2% (24.6–47.9) | 16.7% (0.0–41.4) |
| At visits with VI practice reported | Nv = 1,534 | Nv = 2,919 | Nv = 9,634 | Nv = 1,802 | Nv = 212 |
| Consistent condom use during VI | 15.9% (14.1–19.2) | 13.8% (9.9–17.8) | 23.2% (22.3–24.0) | 32.0% (29.9–34.2) | 32.1% (38.4–25.7) |
| At visits with multiple male sex partners reported | Nv = 666 | Nv = 693 | Nv = 2,321 | Nv = 342 | Nv = 68 |
| AI | 54.7% (50.8–58.6) | 19.2% (16.1–22.3) | 7.1% (6.0–8.2) | 7.3% (4.4–10.3) | 12.5% (2.8–22.2) |
| VI | 98.2% (97.1–99.2) | 98.8% (98.0–99.6) | 68.9% (98.4–99.3) | 97.6% (95.9–99.2) | 91.9% (85.0–98.9) |
| At visits with AI practice and multiple male partners reported | Nv = 342 | Nv = 122 | Nv = 149 | Nv = 22 | Nv = 6 |
| Consistent condom use during AI | 37.7% (32.4–42.9) | 36.9% (28.2–54.6) | 30.2% (22.7–37.7) | 50.0% (27.3–72.7) | 16.7% (0.0–59.5) |
| At visits with VI practice and multiple male partners reported | Nv = 644 | Nv = 670 | Nv = 2,239 | Nv = 321 | Nv = 57 |
| Consistent condom use during VI | 20.8% (17.7–240) | 28.1% (24.6–31.5) | 25.9% (24.1–27.8) | 34.0% (28.7–39.2) | 31.6% (19.1–44.0) |
Nv = number of visits over follow-up; AI = anal intercourse; VI = vaginal intercourse; 95% CI = 95% confidence interval (calculated using the Clopper-Pearson confidence interval for a binomial proportion). The recall period for all sexual behaviors was “since last visit,” which was typically 6 months prior. The groups identified through group-based trajectory modeling are numbered in order of declining proportion of visits in which AI was reported. Consistent condom use is defined as using condoms during every AI or VI act since last visit. Group 1 consists of 75 women, group 2 of 169, group 3 of 549, group 4 of 167, and group 5 of 125.