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Mean scores of knowledge before and after intervention.
| Groups | Knowledge: mean (SD) | With group comparison (p value) | Between-group comparison (p value) | ||
|---|---|---|---|---|---|
| Pretest n = (80) | Posttest_6 m n = (80) | Posttest_1 yr n = (80) | |||
| Intervention | 18.91 (7.02) | 20.41 (6.29) | 25.00 (4.01) | <0.001∗ | 0.044 |
| Control | 18.65 (6.27) | 19.69 (7.11) | 22.14 (7.38) | 0.003∗ | |
