TABLE 2—
Safer Sex Intervention Effects on Primary and Secondary Outcomes at Immediate Posttest Among Tenth-Grade Girls: Southeastern United States, 2015
| Effects at Immediate Posttesta |
||||||
| Outcomes | Intervention, Mean ±SD | Control, Mean ±SD | No. for Analysis | Difference | P | Effect Sizeb |
| Primary outcomes | ||||||
| Sexual assertiveness skillsc (0–2) | 1.2 ±0.4 | 1.1 ±0.4 | 198 | 0.1 | .047 | 0.28 |
| Communication intentions (0–100) | 87.0 ±22.5 | 78.5 ±27.9 | 220 | 8.5 | < .001 | 0.33 |
| Communication self-efficacy (1–4) | 3.6 ±0.5 | 3.5 ±0.5 | 221 | 0.1 | .32 | 0.11 |
| Secondary outcomes | ||||||
| Sexual assertiveness self-report (1–5) | 3.6 ±0.8 | 3.1 ±0.8 | 208 | 0.5 | < .001 | 0.60 |
| HIV and STD knowledge (1–12) | 10.1 ±1.5 | 7.0 ±2.0 | 221 | 3.1 | < .001 | 4.78 |
| Condom attitudes (1–5) | 4.1 ±0.8 | 3.5 ±0.7 | 221 | 0.6 | < .001 | 0.78 |
| Condom norms (1–5) | 3.9 ±0.9 | 3.6 ±1.0 | 219 | 0.3 | .003 | 0.35 |
| Condom self-efficacy (1–4) | 2.8 ±0.8 | 2.3 ±0.8 | 219 | 0.5 | < .001 | 0.43 |
| Condom intentions (0–100) | 93.6 ±21.1 | 92.1 ±22.1 | 214 | 1.5 | .79 | 0.03 |
Note. STD = sexually transmitted disease.
a
Linear regression results, controlling for pretest level of each variable and school.
b
Cohen’s d standardized difference in covariance adjusted means between treatment group and control group.
c
Sexual assertiveness skills were assessed only at immediate posttest; thus, pretest levels were not controlled in this model.