. Author manuscript; available in PMC: 2016 Jul 1.

Published in final edited form as: J Autism Dev Disord. 2015 Jul;45(7):2187–2199. doi: 10.1007/s10803-015-2383-z

Table 6.

Chi-Square Results by Concern Type, Age, and Outcome Group

		6 Months			9 months			12 months
Concern Type	Contrast Pairs	Omnibus df=2 N =150	Contrast χ², p	Odds Ratio	Omnibus df=2 N =124	Contrast χ², p	Odds Ratio	Omnibus df=2 N =109	Contrast χ², p	Odds Ratio
Language	HRA-N vs. LRC	χ² = 7.91 p = .019	7.94, .007	4.07	χ² = 8.60 p = .014	8.73, .007	8.10	χ² = 17.57 p = .000	7.395, .011	4.90
	ASD vs. LRC		1.14, .274	2.50		2.70, .158	4.85		18.53, .000	16.33
	ASD vs. HRA-N		.347, .718	0.61		.374, .712	0.60		3.733, .055	3.30
Social Communication	HRA-N vs. LRC	χ² = 12.32 p = .002	10.55, .002	15.00	χ² = 9.19 p = .010	9.38, .003	-	χ² = 7.22 p = .027	5.28, .042	8.67
	ASD vs. LRC		.150, 1.0	0		4.39, .187	-		7.534, .026	14.18
	ASD vs. HRA-N		2.18, .342	0		.52, .666	0.45		.397, .676	1.63
RRB	HRA-N vs. LRC	χ² = 6.61 p = .037	6.66, .016	6.45	χ² = 11.46 p = .003	8.73, .007	8.10	χ² = 9.31 p = .010	8.52, .005	8.00
	ASD vs. LRC		1.15, .343	3.60		.473, 1.0	0		2.94, .511	2.00
	ASD vs. HRA-N		.284, 1.0	0.56		3.62, .095	0		1.85, .258	0.25
Medical	HRA-N vs. LRC	χ² = 1.90 p = .39	1.75, .224	0.63	χ² = 5.26 p = .072	3.03, .11	0.49	χ² = 4.11 p = .81	.133, .84	1.16
	ASD vs. LRC		.476, .540	0.65		.935, .40	1.75		.155, .767	0.67
	ASD vs. HRA-N		.003, 1.0	1.04		4.44, .062	3.60		.389, .756	0.672
Autism	HRA-N vs. LRC	χ² = 13.0 p = .002	13.02, .001	4.67	χ² = 18.63 p = .000	17.80, .000	9.60	χ² = 18.26 p = .000	13.90, .000	6.47
	ASD vs. LRC		1.74, .183	2.67		.906, .313	2.35		14.07, .001	10.44
	ASD vs. HRA-N		.613, .521	0.57		3.28, .110	0.27		.596, .44	1.61

Note: Bonferroni-holm corrections were applied within age. Significant results are bolded. LRC = Low Risk Control, HRA-N = High-Risk Non-Outcome, ASD = High-Risk Autism Outcome, RRB = Restrictive, Repetitive Behaviors; Odds Ratio.