Table 3.
Differences in sexual risk behaviours between women who reported receptive anal intercourse (RAI) and did not (non-RAI) in the past-year, combined NHBS-HET study cycles 2010 and, 2013.
| Sexual risk behaviours | RAI women N=2924 |
Non-RAI women N=6228 |
Mean difference1
(95% CI) |
p-value | ||
|---|---|---|---|---|---|---|
| Behaviours in past 12 months |
Mean (N) | 95%CI | Mean (N) | 95%CI | ||
| Number of partners | ||||||
| All partners | 10.2 | 7.7-12.7 | 3.5 | 3.0-3.9 | 6.7 (4.7-8.7) | <0.0001 |
| Main partners | 1.4 | 1.3-1.5 | 1.1 | 1.1-1.1 | 0.3 (0.1-0.4) | <0.0001 |
| Casual partners | 8.6 | 7.2-10.0 | 2.3 | 2.1-2.6 | 6.3 (4.8-7.7) | <0.0001 |
| Last-sex partner characteristics |
N | % | N | % | OR (95%CI) |
mhOR2 (95% CI) |
| Partner type | ||||||
| Main partner | 1805 | 61.8 | 4704 | 75.6 | ref | ref |
| Casual partner | 1115 | 38.2 | 1520 | 24.4 | 1.91 (1.74-2.10) | 1.84 (1.67-2.02) |
| Partner HIV status | ||||||
| Negative | 941 | 32.2 | 2792 | 44.9 | ref | ref |
| Unknown/positive | 1979 | 67.8 | 3431 | 55.1 | 1.71 (1.56-1.88) | 1.68 (1.53-1.85) |
| Condom use during last sexual episode |
N | % | N | % | OR (95%CI) |
mhOR2 (95% CI) |
| Condom use – at last RVI | ||||||
| All partners | ||||||
| UVI | 2605 | 90.8 | 5054 | 81.2 | ref | ref |
| Condom protected RVI | 264 | 9.2 | 1170 | 18.8 | 0.44 (0.38-0.50) | 0.46 (0.40-0.53) |
| Main partners | ||||||
| UVI | 1657 | 93.1 | 3984 | 84.7 | ref | ref |
| Condom protected RVI | 123 | 6.9 | 720 | 15.3 | 0.41 (0.34-0.50) | 0.43 (0.35-0.53) |
| Casual partners | ||||||
| UVI | 948 | 87.1 | 1070 | 70.4 | ref | ref |
| Condom protected RVI | 141 | 12.9 | 450 | 29.6 | 0.35 (0.29-0.44) | 0.38 (0.31-0.47) |
| Condom use - by RAI women (all partners) | - | - | ||||
| UVI | 2605 | 90.8 | - | - | ||
| Condom protected RVI | 264 | 9.2 | ref | ref | ||
| UAI | 970 | 92.8 | - | - | ||
| Condom protected AI | 75 | 7.2 | 0.76 (0.58-1.00) | 0.80 (0.61-1.05) | ||
Note. RAI, receptive anal intercourse; UVI, unprotected vaginal intercourse; UAI, unprotected anal intercourse; RVI, receptive vaginal intercourse
T-tests stratified for age, exchange sex, race/ethnicity produced similar results, not shown (with some exceptions where there was weaker evidence for a difference in main partners among Hispanic and Other racial/ethnic women and for main and casual partners among White women, p>0.05). Evidence for a difference in main partners was only observed in San Diego (p=0.02); there was evidence for a difference in casual partners in all but 4 cities (Baltimore, Denver, San Juan, Seattle).
Mantel-Haenszel OR stratified for city (adjustments for age, exchange sex, race/ethnicity produced similar results, not shown)