. Author manuscript; available in PMC: 2023 Sep 21.

Published in final edited form as: J Autism Dev Disord. 2020 Nov;50(11):3844–3856. doi: 10.1007/s10803-020-04438-y

Table 2.

Parameter estimates from linear mixed-effects model analysis

	Sameness/ritualistic/compulsive		Self-injurious		Stereotyped/restricted
	Estimate (SE)	Z	Estimate (SE)	Z	Estimate (SE)	Z
ASD group Age	0.24 (.07)	3.70^***	− 0.45 (.24)	− 1.86^†	0.03 (.06)	0.56
ADOS (SA)	0.29 (.08)	3.48^***	0.04 (.23)	0.16	0.15 (.09)	1.72^†
IQ/DQ	− 0.15 (.08)	− 1.95^†	− 0.28 (.20)	− 1.40	− 0.22 (.06)	− 3.50^***
T2 Sleep problems	0.03 (.01)	2.47^*	0.02 (.02)	1.09	0.01 (.01)	1.75^†
DD group Age	1.31 (.27)	4.85^***	− 0.36 (.46)	0.78	0.77 (.27)	2.82^**
ADOS (SA)	0.54 (.21)	2.51^*	0.83 (.47)	1.76^†	0.45 (.21)	2.12^*
IQ/DQ	0.29 (.26)	1.11	− 0.04 (.63)	− .007	− 0.15 (.29)	− 0.53
T2 sleep problems	0.07 (.02)	2.79^**	0.11 (.06)	1.96^†	− 0.01 (.03)	− 0.35

p < .05

^**

p < .01

^***

p < .001

^†

p < .1