Table 3.
Impact of the interventions on outcome measures, parameter estimates, and 95% confidence intervals from generalized estimating equation analyses
| Outcome measures | Main effect of intervention | |||
|---|---|---|---|---|
| Intervention | Control | β±SE | P | |
| Smoking-related knowledge (mean±SD) | ||||
| Baseline | 7.39±2.91 | 7.64±2.90 | 1.33±0.13 | <0.001* |
| Follow-up | 11.69±1.28 | 8.15±2.76 | ||
| Attitude toward smoking (mean±SD) | ||||
| Pretest | 56.59±7.11 | 56.90±7.28 | 0.62±2.87 | 0.124 |
| Posttest | 57.02±6.82 | 56.77±7.37 | ||
| Normative beliefs (mean±SD) | ||||
| Pretest | 12.60±1.06 | 12.47±1.07 | 0.69±0.71 | <0.001* |
| Posttest | 13.21±0.92 | 12.21±1.1 | ||
| Intention to tobacco use (mean±SD) | ||||
| Pretest | 7.05±1.35 | 6.49±1.30 | 0.17±0.10 | 0.013* |
| Posttest | 7.73±0.53 | 6.46±0.71 | ||
*Significant at P<0.05. SD=Standard deviation, SE=Standard error