Attention and motor deficits index non-specific background liabilities that predict autism recurrence in siblings

Table 4 Linear regression analyses predicting parent-reported autistic trait severity in siblings

	Model 1		Model 2a		Model 2b		Model 3		Model 4		Model 5
	n = 35		n = 35		n = 35		n = 35		n = 35		n = 35
	β	p	β	p	β	p	β	p	β	p	β	p
Proband SRS-2 score (teacher report)	0.30	0.086	0.26	0.098	0.26	0.098	0.19	0.109	0.19	0.111
Sibling TRF ADHP score (teacher report)			0.45	0.005			0.24	0.066	0.25	0.074	0.24	0.063
Sibling DCDQ score (parent report)					−0.68	<0.001	−0.60	<0.001	−0.60	<0.001	−0.62	<0.001
TRF ADHP × DCDQ interaction									0.03	0.793
Adjusted R ²	0.059		0.247		0.517		0.554		0.540		0.530

Note: n = 35 for all models (only siblings with all data available were included). For SRS-2 and TRF, a higher score indicates more severe impairment. For DCDQ, a higher score represents better functioning
SRS-2 Social Responsiveness Scale-2 (T score), TRF ADHP DSM-oriented Attention-Deficit/Hyperactivity Problems Scale (T score), from Teacher Report Form, DCDQ Developmental Disorder Coordination Questionnaire (adjusted total score)

ISSN: 1866-1955