Group I

(≤12 months)

Group II

(13 months - 23 month)

Group III

(≥24 month)

Chi square test/

ANOVA test**

X²/f**

P value

Sex

Female

13

37.1%

16

47.1%

15

41.7%

0.698

0.705

Male

22

62.9%

18

52.9%

21

58.3%

Cons

Negative

24

68.6%

21

61.8%

21

58.3%

0.822

0.663

Positive

11

31.4%

13

38.2%

15

41.7%

Age (months)

Mean ± SD

9.63 ± 1.97

17.18 ± 2.93

31.42 ± 6.47

235.945**

<0.001**