Table 2. Effects for SEM and BB SEM Consumption.
| Model 1: Frequency of CAS1 | Model 2: Probability of CAS2 | |||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| B | Exp (B) | 95% CI | B | Exp (B) | 95% CI | |
| Age | 0.01 | 1.01* | 1.00, 1.03 | 0.01 | 1.01*** | 1.00, 1.01 |
| White race (ref. yes) | 0.06 | 1.06 | 0.77, 1.49 | 0.12 | 1.13* | 1.02, 1.25 |
| 4-year college degree (ref. yes) | 0.00 | 1.00 | 0.73, 1.39 | -0.06 | 0.94 | 0.86, 1.03 |
| Income 20k or less (ref. >50k) | -0.39 | 0.68 | 0.43, 1.06 | -0.27 | 0.77*** | 0.68, 0.86 |
| Income 21-50k (ref. >50k) | -0.48 | 0.62* | 0.39, 0.96 | -0.23 | 0.80*** | 0.71, 0.90 |
| Relationship (ref. single) | -0.13 | 0.88 | 0.65, 1.21 | -0.03 | 0.97 | 0.88, 1.07 |
| Currently on PrEP (ref. yes) | 0.79 | 2.20*** | 1.45, 3.43 | 0.12 | 1.13* | 1.03, 1.25 |
| SEM consumption | 0.12 | 1.13 | 0.96, 1.32 | -0.04 | 0.96 | 0.91, 1.14 |
| Percentage BB consumption | 0.02 | 1.03*** | 1.02, 1.03 | 0.02 | 1.02*** | 1.01, 1.02 |
| SEM × Percentage BB consumption | 0.01 | 1.01* | 1.00, 1.01 | 0.00 | 1.00** | 1.00, 1.01 |
***
p <.001,
**
p <.01,
*
p <.05
Note:
1
Frequency of CAS refers to the total number of casual CAS acts and is modeled in a negative binomial regression;
2
Probability of CAS in any given casual sex encounter is modeled using a Poisson regression of the total number of casual CAS acts with an offset equal to the log number of anal sex events.