From: A trial of patient-oriented problem-solving system for immunology teaching in China: a comparison with dialectic lectures
Nubmer
Min
Max
Mean
SD
Pre-test group I
110
0
6
2.78
0.67
Pre-test group II
221
2.35
0.54
t =1.73
P > 0.05
Post-test group I
7
10
9.05
1.25
Post-test group II
4
8
5.53
1.85
t =4.85
P < 0.001