Neurodevelopmental domain characteristics and their association with core symptoms in preschoolers with autism spectrum disorder in China: a nationwide multicenter study

Table 4 DQ characteristics in children with ASD with and without DD

Item	No DD [Median (IQR)] (n = 322)	Mild DD [Median (IQR)] (n = 333)	Moderate and below DD [Median (IQR)] (n = 364)
Gross motor	96 (87,106)	79 (69,88)	61 (52,72)
Fine motor	79.5 (70,91)^a	61 (54,68)^a	44 (35.25,51)^a
Language	83 (68,96)^a	51 (40,60)^ab	30 (23,38.75)^ab
Personal-social	76 (65.75,87.25)^ac	54 (49,61)^abc	38 (32,45)^abc
H	211.983	565.304	630.603
p-value	< 0.001	< 0.001	< 0.001

^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)
Due to their skewed distribution, the four developmental subscales were compared by the Kruskal-Wallis test
DQ developmental quotient; ASD autism spectrum disorder; DD developmental delay; IQR interquartile range

ISSN: 1471-244X