Table 4: General characteristics of the study group.

Age range

Sex

male

Sex

female

Total

1-5

3

5

8

6-10

18

7

25

11-15

20

10

30

16-20

14

18

32

21-25

15

11

26

26-30

9

6

15

31-35

6

2

8

36-40

8

2

10

41-45

4

3

7

46-50

4

3

7

51-55

2

1

3

56-60

2

1

3

61-65

 

1

1

66-70

 

1

1

71-75

4

1

5

< 75

1

 

1

Total

110

72

182

Mean

25

22

 

Median

 

21

19

SD

17

15

 

Variance

315

231

 

Source: Result of the study.