Table 2.

Comparison of differences between CA and DA in different age groups for boys

3–6years (N1=42)		6–9 years (N2=78)		9–12 years (N3= 72)		More than 12 years (N4=30)
Mean	SD	Mean	SD	Mean	SD	Mean	SD
0.257	0.074	0.215	0.095	0.296	0.148	0.433	0.048
F= 30.633, p<0.001

F: for one way ANOVA between 4 groups

^*statistically significant at p<0.05