Table 2. Generalized Linear Models: Effects of Risk Perceptions and Experimental Manipulations on Reported Number of Partners and Condom Use.
| Number of partners (n = 1288) | Condom use primary partner (n = 929) | Condom use secondary partners (n = 640) | 100% condom use secondary partners (n = 640) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| B | SE | Wald χ2 | B | SE | Wald χ2 | B | SE | Wald χ2 | B | SE | Wald χ2 | |
| Model 1: Main effects | ||||||||||||
| Intercept | 1.19 | 0.06 | 414.11*** | 0.60 | 0.03 | 471.60*** | 0.61 | 0.04 | 300.16*** | 0.02 | 0.19 | 0.01 |
| Safer sex intentions | -0.12 | 0.01 | 101.78*** | 0.06 | 0.01 | 86.62*** | 0.03 | 0.01 | 19.04*** | 0.07 | 0.04 | 4.28* |
| Risk perceptions | 0.23 | 0.05 | 19.47*** | -0.07 | 0.02 | 11.35*** | 0.07 | 0.03 | 5.64* | 0.05 | 0.16 | 0.09 |
| Evidence-based session | -0.32 | 0.05 | 40.06*** | 0.05 | 0.02 | 4.61* | 0.07 | 0.03 | 6.15* | 0.49 | 0.16 | 9.03** |
| Baseline interviews | ||||||||||||
| Event-based | 0.03 | 0.06 | 0.22 | -0.40 | 0.03 | 1.89 | 0.01 | 0.04 | 0.07 | -0.16 | 0.20 | 0.66 |
| Frequency-based | -0.05 | 0.06 | 0.70 | -0.2 | 0.03 | 0.49 | -0.01 | 0.03 | 0.07 | -0.14 | 0.20 | 0.52 |
| Model 2: Main effects + interactions | ||||||||||||
| Intercept | 1.19 | 0.10 | 225.26*** | 0.62 | 0.04 | 267.77*** | 0.62 | 0.05 | 169.29*** | 0.02 | 0.26 | 0.00 |
| Safer sex intentions | -0.12 | 0.01 | 103.61*** | 0.06 | 0.01 | 89.93*** | 0.03 | 0.01 | 18.56*** | 0.09 | 0.03 | 5.43* |
| Risk perceptions | 0.34 | 0.10 | 11.33** | -0.26 | 0.06 | 21.93*** | -0.07 | 0.06 | 1.62 | -0.56 | 0.33 | 2.84+ |
| Evidence-based session | -0.39 | 0.10 | 14.72*** | 0.03 | 0.05 | 0.17 | 0.17 | 0.06 | 9.78** | 1.12 | 0.34 | 10.66** |
| Baseline interviews | ||||||||||||
|
| ||||||||||||
| Event-based | 0.07 | 0.10 | 0.42 | -0.06 | 0.05 | 0.14 | 0.02 | 0.06 | 0.07 | -0.29 | 0.34 | 0.73 |
| Frequency-based | -0.10 | 0.10 | 0.92 | -0.04 | 0.05 | 0.63 | -0.01 | 0.06 | 0.02 | -0.15 | 0.34 | 0.19 |
| Evidence-based session × baseline interviews | ||||||||||||
| Evidence-based session × event-based | 0.08 | 0.13 | 0.40 | -0.08 | 0.06 | 1.26 | -0.19 | 0.07 | 7.91** | -0.81 | 0.41 | 3.83* |
| Evidence-based session × frequency-based | 0.21 | 0.13 | 2.76+ | -0.04 | 0.07 | 0.13 | -0.19 | 0.07 | 8.02** | -0.98 | 0.41 | 5.82* |
| Evidence-based session × risk perceptions | -0.07 | 0.10 | 0.46 | 0.12 | 0.03 | 19.24*** | 0.05 | 0.06 | 0.63 | -0.06 | 0.33 | 0.03 |
| Baseline interviews × risk perceptions | ||||||||||||
| Event-based × risk perceptions | -0.15 | 0.13 | 1.34 | 0.14 | 0.13 | 1.19 | 0.17 | 0.07 | 6.35* | 0.99 | 0.41 | 5.78* |
| Frequency-based × risk perceptions | -0.10 | 0.12 | 0.59 | 0.08 | 0.12 | 1.35 | 0.18 | 0.07 | 7.37** | 0.88 | 0.40 | 4.77* |
| Evidence-based session × baseline interviews × risk perceptions | ||||||||||||
| Evidence-based session × frequency-based* risk perceptions | -- | -- | -- | -0.22 | 0.11 | 4.17* | -- | -- | -- | -- | -- | -- |
| Evidence-based session × event-based × risk perceptions | -- | -- | -- | -0.25 | 0.10 | 5.78* | -- | -- | -- | -- | -- | -- |
| Model likelihood ratio χ2 | 186.16*** | 129.18*** | 49.31*** | 28.47*** | ||||||||
*
p < .05,
**
p < .01,
***
p <.001,
+
p <. 10
Note. Different ns in the analyses reflect that different numbers of individuals reported having main and secondary partners