| (I) Group | (J) Group | Mean Difference (I-J) | Std. Error | Sig. |
| FC-PBL group | PBL group | −2.14032* | 0.08933 | 0.000 |
| Conventional group | −2.68548* | 0.08933 | 0.000 | |
| PBL group | FC-PBL group | 2.14032* | 0.08933 | 0.000 |
| Conventional group | −0.54516* | 0.08933 | 0.000 | |
| Conventional group | FC-PBL group | 2.68548* | 0.08933 | 0.000 |
| PBL group | 0.54516* | 0.08933 | 0.000 |