Table 2 Frequency and percentage of demographic variables

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)