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Table 2 Frequency and percentage of demographic variables

From: Effect of educational intervention on safe traffic behaviors of high school male students in Iran, using the theory of planned behavior: a quasi-experimental study

Characteristics Intervention Control
N % N %
Grade 7 21 20.6 17 16.7
8 17 16.7 18 17.6
9 19 18.6 18 17.6
10 15 14.7 16 15.7
11 18 17.6 17 16.7
12 12 11.8 16 15.7
Type of previous school Public 57 55.9 53 52
Private 45 44.1 49 48
Number of family members 3≥ 32 31.4 28 27.5
4 19 18.6 21 20.6
5 30 29.4 33 32.4
6≤ 31 20.6 20 19.6
Father’s job Self-employed 44 43.1 37 36.3
Employee 22 21.6 19 18.6
Manual worker 16 15.7 20 19.6
Driver 10 9.8 14 13.7
Retired 8 7.8 8 7.8
Other 2 2 4 3.9
Mother’s job Self-employed 14 13.7 9 8.8
Employee 37 26.3 31 30.4
Manual worker 4 3.9 10 9.8
Driver 4 3.9 3 2.9
Retired 5 4.9 10 9.8
Housewife 38 37.3 39 38.2
Father’s education level Below diploma 18 17.6 11 10.8
Diploma 29 28.4 21 20.6
Associate Degree 15 14.7 26 25.5
Bachelor 35 34.3 35 34.3
Master 5 4.9 9 8.8
Mother’s education level Below diploma 12 11.8 10 9.8
Diploma 34 33.3 24 23.5
Associate Degree 18 17.6 22 21.6
Bachelor 34 33.3 36 35.3
Master 4 3.9 10 9.8
Transportation mode from home to school On foot 52 51 56 54.9
Bike 24 23.5 22 21.6
Public transportation 17 16.7 13 12.7
A combination of three methods 9 8.8 11 10.8
Age Mean (SD) 17.31 (2.14) 16.83 (3.05)