Table 4.
3–6years (N1=30) | 6–9 years (N2=85) | 9–12 years (N3= 55) | More than 12 years (N4=28) | ||||
---|---|---|---|---|---|---|---|
Mean | SD | Mean | SD | Mean | SD | Mean | SD |
0.350 | 0.051 | 0.329 | 0.113 | 0.396 | 0.110 | 0.571 | 0.071 |
F= |
F: for one way ANOVA between 4 groups
statistically significant at p<0.05