Table 3.
Individual-level, partnership-level, and sexual event-level characteristics associated with condom use during RAI at the last sexual event with recent sexual partners reported by HIV-negative MSM
|
|
||||
|---|---|---|---|---|
| Unadjusted | Adjusteda | |||
|
|
||||
| Model 1b (N=344) |
Model 2c (N=344) |
Model 3d (N=344) |
||
|
|
||||
| Characteristic | OR (95% CI) |
AOR (95% CI) |
AOR (95% CI) |
AOR (95% CI) |
| Individual-level | ||||
| Age (units=5 years) | 0.98 (0.87, 1.11) |
1.12 (0.93, 1.34) |
1.12 (0.93, 1.34) |
1.14 (0.95, 1.37) |
| Race/ethnicity | ||||
| White | Ref | Ref | Ref | Ref |
| African American | 0.72 (0.36, 1.43) |
0.72 (0.29, 1.78) |
0.81 (0.32, 2.03) |
0.72 (0.29, 1.80) |
| Hispanic | 0.99 (0.51, 1.92) |
1.20 (0.54, 2.68) |
1.29 (0.57, 2.93) |
1.17 (0.52, 2.64) |
| Other | 1.25 (0.49, 3.18) |
1.98 (0.57, 6.88) |
2.31 (0.66, 8.10) |
1.89 (0.56, 6.45) |
| ≥ High school education | 0.65 (0.29, 1.46) |
0.32 (0.11, 0.96)* |
0.33 (0.11, 0.99)* |
0.30 (0.10, 0.91)* |
| Gay identifying | 1.83 (1.05, 3.21)* |
1.33 (0.61, 2.90) |
1.22 (0.55, 2.70) |
1.37 (0.63, 3.02) |
| Homeless (past year) | 0.70 (0.41, 1.20) |
0.67 (0.30, 1.46) |
0.63 (0.28, 1.39) |
0.65 (0.29, 1.43) |
| Annual income < $9,800e | 0.91 (0.53, 1.57) |
- | - | - |
|
Partnership-level/sexual
event-levelf |
||||
| Collected for P1, P2, & P3 | ||||
| Main partner Age mixing |
0.56 (0.32, 0.95)* |
0.54 (0.26, 1.10) |
- | 0.54 (0.26, 1.12) |
| Partner >10 years younger than participant |
1.28 (0.72, 2.28) |
0.85 (0.37, 1.93) |
0.86 (0.37, 1.96) |
0.83 (0.36, 1.89) |
| Participant and partner within 10 years of age |
Ref | Ref | Ref | Ref |
| Partner >10 years older than participant |
1.09 (0.53, 2.24) |
1.56 (0.64, 3.81) |
1.45 (0.59, 3.55) |
1.70 (0.69, 4.20) |
| Serodiscordant partnerg | 0.99 (0.63, 1.56) |
1.05 (0.59, 1.87) |
1.02 (0.57, 1.81) |
1.05 (0.59, 1.88) |
| Methamphetamine use | 0.50 (0.27, 0.93)* |
0.28 (0.12, 0.69)* |
- | - |
| Volatile nitrites (poppers) | 1.10 (0.53, 2.29) |
0.94 (0.36, 2.48) |
0.99 (0.37, 2.64) |
1.01 (0.38, 2.71) |
| Crack or powder cocaine | 1.61 (0.79, 3.30) |
2.63 (0.95, 7.29) |
2.38 (0.85, 6.65) |
2.43 (0.89, 6.64) |
| Viagra | 1.63 (0.63, 4.25) |
2.77 (0.69, 11.17) |
3.11 (0.75, 12.83) |
2.73 (0.67, 11.07) |
| Lubricant use during RAI | 4.06 (2.39, 6.90)* |
6.41 (3.21, 12.80)* |
6.24 (3.13, 12.44)* |
- |
| Partner ejaculated inside participant |
0.89 (0.57, 1.38) |
1.30 (0.72, 2.33) |
1.38 (0.76, 2.51) |
1.31 (0.72, 2.37) |
| Partner type by methamphetamine use |
||||
| Main partner | ||||
| Methampheta mine use |
- | - | 1.17 (0.21, 6.57) |
- |
| Non-main partner | ||||
| Methampheta mine use |
- | - | 0.20 (0.07, 0.53)* |
- |
| Lubricant use by methamphetamine use |
||||
| Lubricant use | ||||
| Methampheta mine use |
- | - | - | 0.20 (0.08, 0.53)* |
| No lubricant use | ||||
| Methampheta mine use |
- | - | - | 1.47 (0.26, 8.41) |
| Collected for P1 only | ||||
| Perceived partner concurrencyh |
1.34 (0.77, 2.36) |
1.72 (0.84, 3.52) |
- | - |
| Traded drugs, money or other goods for sexi |
0.63 (0.33, 1.23) |
0.71 (0.28, 1.80) |
- | - |
| Last sexual event at homej |
1.62 (0.88, 2.98) |
1.27 (0.58, 2.75) |
- | - |
| Duration of RAI at last sexual event (in minutes) |
1.01 (1.00, 1.03) |
1.02 (0.99, 1.04) |
- | - |
| Partnership assessment scalek |
0.97 (0.94, 1.01) |
0.97 (0.91, 1.01) |
- | - |
Abbreviations: RAI=receptive anal intercourse; MSM=men who have sex with men; OR=odds ratio; AOR=adjusted odds ratio; CI=confidence interval; P1=last sexual partner; P2=second to last sexual; P3=third to last sexual partner.
p-value < 0.05
Adjusted for visit, age, race/ethnicity, education, sexual identity, homelessness, partner type, age mixing, partnership serostatus, substance use (methamphetamine, volatile nitrites, cocaine and Viagra), lubricant use, and ejaculation.
Model 1 - no interactions.
Model 2 - interaction between partner type and methamphetamine use at last sexual event with partner (interaction: F statistic = 3.46; p-value = 0.06).
Model 3 - interaction between lubricant use during RAI and methamphetamine use at last sexual event with partner (interaction: F statistic = 4.08; p-value = 0.04).
Highly correlated with homelessness, thus not included in multivariate models.
Measured at the last sexual event within reported partnerships.
HIV-positive and HIV status unknown partners defined as serodiscordant.
Participant believes partner had partners concurrent to their partnership.
The participant ever gave his partner drugs, money, or other goods in exchange for sex or the partner ever gave the participant drugs, money, or other goods in exchange for sex.
Participant or their partner's home.
Highly correlated with partner type, therefore the adjusted odds ratio is not adjusted for partner type.