The reach-to-grasp movement in infants later diagnosed with autism spectrum disorder: a high-risk sibling cohort study

Table 5 Sub-component analysis results

Component	Sub-component	Group		Age		Sex		Interaction effects	Post hoc group^O
Component	Sub-component	F	p	F	p	F	p	Interaction effects	Post hoc group^O
Orient	A. Engage	.63	.53	5.33	.001*	2.27	.13	No	NA
Orient	B. Disengage	3.38	.04*	18.65	.001*	1.12	.29	No	a < b, c
Lift	A. Elbow flex	4.61	.01*	44.56	.001*	.62	.43	No	a < c
	B. Digits flex	4.33	.02*	23.79	.001*	2.57	.11	No	a < c
	C. Supinate	3.77	.03*	34.01	.001*	6.53	.01*^	No	b < c
	D. Tips to midline	3.91	.02*	24.12	.001*	2.88	.09	No	a < c
Advance	A. Hand path	.86	.43	37.47	.001*	1.76	.19	No	NA
	B. Hand to target	2.53	.08	56.89	.001*	.001	.98	Yes¹	NA
	C. Trunk lean	1.58	.21	1.04	.40	1.41	.24	No	NA
Pronation	A. Digits open	4.02	.02*	15.87	.001*	8.71	.004*^	No	a < c
	B. Knuckle	6.57	.002*	43.81	.001*	9.24	.003*^	No	c > a, b
	C. Elbow extend	3.39	.04*	4.17	.001*	5.65	.019*^	Yes¹²³⁴	b < c
Grasp	A. Appropriate grasp	.13	.88	13.03	.001*	.11	.75	Yes¹	NA
Grasp	B. Wrist extenda	.60	.55	10.51	.001*	2.95	.09	No	NA

a LR control; b HR-N, c HR-ASD, NA not applicable; *Significantly different at p < .05, ^OBenjamini and Hochberg corrected p value
¹Age × sex interaction
²Group × sex interaction
³Age × sex interaction
⁴Group × age × sex interaction
^{^}Boys < girls