Table 2 Characteristics of the study groups. There were no significant differences regarding age, gender, semester, self assessment of sonography, echocardiography, and cardiac anatomy

number of participants

76

77

age years

25.97

25.78

0.682*

gender (women)

39

50

0.088⁺

sonography class

67

44

0.000⁺

peer teacher

8

6

0.558⁻

heart class

2

1

0.620⁻

self-assessment

in sonography

8 16 31 18 3

5 22 30 18 2

0.763⁺

in echocardiography

26 31 13 5 1

32 19 14 12 0

0.094⁺

in cardiac anatomy

1 16 32 25 2

1 9 34 32 1

0.491⁺