Table 5 The descriptive statistics of the males’ and females’ age by CVS

1

33

35

8.79 ± 0.78

9.03 ± 0.98

8–12

8–10

2

11

31

9.73 ± 1.01

10.71 ± 1.13

8–12

8–12

3

18

28

11.17 ± 0.62

12.86 ± 0.89

11–14

10–12

4

27

22

12.63 ± 1.08

14.41 ± 0.80

13–16

11–15

5

19

17

13.84 ± 0.76

15.71 ± 0.47

15–16

13–15

6

42

17

16.05 ± 0.90

16.88 ± 0.33

16–17

14–17