Table 2 The two groups of students self-rated their professional knowledge. (\(\overline{x}\) ± s, points)

Basic steps of spinal surgery

7.09 ± 1.33

5.77 ± 1.86

4.21

<0.001

Spinal anatomy

6.53 ± 1.85

4.75 ± 2.00

4.75

<0.001

Classic classification of disease

7.72 ± 1.41

7.02 ± 1.54

2.44

0.016

System to study spinal disease

6.26 ± 1.93

5.00 ± 1.95

3.35

0.001

Three-dimensional CT image of reading

6.85 ± 1.71

5.34 ± 1.72

4.53

<0.001