|  | Group |  |  |  | |
---|---|---|---|---|---|---|
All students | FG | TG | Statistics | df | P value | |
Number of students | 67 | 32 | 35 | Â | Â | Â |
Gender | ||||||
 Male | 24 | 11 | 13 | χ2 = 0.056 | 1 | 1.000 |
 Female | 43 | 21 | 22 |  |  |  |
Age (years old), mean ± SD | 22.896±0.873 | 22.813±0.859 | 22.971±0.891 | t = 0.742 | 64.805 | 0.460 |