Fig. 2From: The effectiveness of the combined problem-based learning (PBL) and case-based learning (CBL) teaching method in the clinical practical teaching of thyroid diseaseThe comparison of pre- and post-class quiz scores in the PBL–CBL and traditional groups. a. The comparison of the total pre- and post-class quiz scores (b). The comparison of the basic knowledge pre- and post-class quiz scores (c). The comparison of the case analysis pre- and post-class quiz scores. *** means p < 0.001Back to article page