Table 2 Effects of Intervention on Information, Motivation, Behavioural Skills and Communication at post tests (N = 836)
Measure | Experimental (n = 439) | Control (n = 397) | F- value | p-value | Effect size Cohen’s d |
|---|---|---|---|---|---|
Mean (SD) | Mean (SD) | ||||
Information | |||||
 Pre-test | 10.00 (2.1) | 10.28 (1.8) | 4.17 | 0.04 |  |
 Post-test | 9.00 (4.8) | 9.41 (5.5) | 1.26 | 0.26 | 0.07 |
Motivation: Perceived risk | |||||
 Pre-test | 5.58 (1.5) | 5.23 (1.7) | 10.02 | 0.002 |  |
 Post-test | 6.62 (2.7) | 5.92 (2.8) | 4.58 | < 0.001 | 0.3 |
Social norms | |||||
 Pre-test | 7.64 (1.4) | 7.71 (1.5) | 0.56 | 0.46 |  |
 Post-test | 8.32 (1.6) | 8.25 (1.5) | 0.46 | 0.51 | 0.05 |
Attitude | |||||
 Pre-test | 13.44 (2.0) | 13.27 (1.8) | 1.51 | 0.22 |  |
 Post-test | 12.52 (2.6) | 11.61 (2.6) | 26.6 | < 0.001 | 0.3 |
Behavioural skills Self-efficacy | |||||
 Pre-test | 8.73 (2.4) | 8.04 (2.5) | 17.12 | < 0.001 |  |
 Post-test | 11.60 (2.7) | 11.41 (2.8) | 0.95 | 0.33 | 0.07 |
Skills | |||||
 Pre-test | 7.46 (2.6) | 7.43 (2.5) | 0.48 | 0.83 |  |
 Post-test | 11.19 (2.9) | 10.50 (3.1) | 10.81 | 0.001 | 0.23 |
Communication | |||||
 Pre-test | 16.26 (4.6) | 15.05 (4.8) | 13.98 | < 0.001 |  |
 Post-test at 1 month follow up | 22.46 (4.9) | 20.99 (5.2) | 16.74 | < 0.001 | 0.3 |
 Post-test at 6 month follow up | 23.58 (4.5) | 22.12 (5.2) | 17.9 | < 0.001 | 0.3 |
 Post-test at 1 year follow up | 24.15 (3.7) | 21.83 (6.3) | 40.44 | < 0.001 | 0.4 |