| Total knowledge and attitude score (max = 10) | N | % | Cumulative % |
| 1.5 | 7 | 7.0 | 7.0 |
| 2.3 | 13 | 13.0 | 20.0 |
| 3.1 | 23 | 23.0 | 43.0 |
| 3.8 | 17 | 17.0 | 60.0 |
| 4.6 | 16 | 16.0 | 76.0 |
| 5.4 | 11 | 11.0 | 87.0 |
| 6.2 | 7 | 7.0 | 94.0 |
| 6.9 | 5 | 5.0 | 99.0 |
| 7.7 | 1 | 1.0 | 100.0 |
| Total | 100 | 100.0 |