Skill item | DQ [Median (IQR)] | DQ ≥ 70 [n(%)] | DQ < 70 [n(%)] |
|---|
Gross motor | 79 (64,92) | 673(66.0%) | 346(34.0%) |
Fine motor | 60 (47,74)a | 317(31.1%)* | 702(68.9%)* |
Language | 49 (33,71)ab | 268(26.3%)* | 751(73.7%)* |
Personal-social | 54 (42,68)abc | 234(23.0%)*# | 785(77.0%)*# |
H/χ2 | 695.723 | 523.089 |
p-value | < 0.0001 | < 0.0001 |
- a = statistical difference when compared with gross motor DQ(p < 0.001); b = statistical difference when compared with fine motor DQ(p < 0.001); c = statistical difference when compared with language DQ(p < 0.001); * = statistical difference when compared with gross motor DQ(p < 0.001); # = statistical difference when compared with fine motor DQ(p < 0.001)
- Categorical variables were compared using the chi-squared test followed by Bonferroni correction for multiple comparisons. Due to their skewed distribution, the four developmental subscales were compared by the Kruskal-Wallis test
- DQ developmental quotient; IQR interquartile range
