Table 2.
The correct percentage of 16 questions in the Oral Health Knowledge Questionnaire
| Question | The correct percentage of the course students (%) | The correct percentage of the non-course students (%) | |||
|---|---|---|---|---|---|
| Before the first class | After the first class | At the end of the semester | At the beginning of the semester | At the end of the semester | |
| 1 | 20.7 | 87.0 | 69.6 | 21.1 | 31.6 ** |
| 2 | 17.4 | 92.4 | 76.1 | 26.3 | 21.1 *** |
| 3 | 32.6 | 69.6 | 57.6 | 36.8 | 31.6 * |
| 4 | 16.3 | 77.2 | 72.8 | 21.1 | 15.8 *** |
| 5 | 84.8 | 96.7 | 96.7 | 84.2 | 94.7 |
| 6 | 73.9 | 92.4 | 92.4 | 89.5 | 68.4 ** |
| 7 | 8.7 | 63.0 | 50.0 | 21.1 | 5.3 *** |
| 8 | 92.4 | 100.0 | 96.7 | 89.5 | 89.5 |
| 9 | 35.9 | 93.5 | 83.7 | 42.1 | 36.8 *** |
| 10 | 47.8 | 96.7 | 95.7 | 36.8 | 47.4 *** |
| 11 | 78.3 | 98.9 | 97.8 | 68.4 | 68.4 *** |
| 12 | 81.5 | 100.0 | 98.9 | 78.9 | 63.2 *** |
| 13 | 87.0 | 97.8 | 97.8 | 89.5 | 94.7 |
| 14 | 94.6 | 97.8 | 97.9 | 94.7 | 94.7 |
| 15 | 98.9 | 98.9 | 98.9 | 89.5 | 89.5 |
| 16 | 27.2 | 88.0 | 81.5 | 21.1 | 21.1 *** |
*、**、*** indicates that there is a significant difference in the correct percentage of the question between two groups at the same time point (*: P < 0.05; **: P < 0.01; ***: P < 0.001)