Developmental divergence: motor trajectories in children with fragile X syndrome with and without co-occurring autism

Table 2 Gross motor trajectory models

	Gross motor direct assessment
	9-month models			12-month models			18-month models
	b	SE(b)	p	b	SE(b)	p	b	SE(b)	p
Intercept	8.63	0.98	< .001	10.43	0.90	< .001	14.03	0.81	< .001
VRDQ	0.02	0.01	.017	0.02	0.01	.017	0.02	0.01	.017
Age	0.60	0.06	< .001	0.60	0.06	< .001	0.60	0.06	< .001
FXS	0.71	0.91	.441	1.11	0.80	.169	1.91	0.77	.016
TD	2.21	0.85	.013	2.71	0.76	.001	3.72	0.75	< .001
FXS × age	0.13	0.08	.110	0.13	0.08	.110	0.13	0.08	.110
TD × age	0.17	0.08	.029	0.17	0.08	.029	0.17	0.08	.029
	Gross motor parent report
	9-month models			12-month models			18-month models
	b	SE(b)	p	b	SE(b)	p	b	SE(b)	p
Intercept	10.97	2.55	< .001	14.39	2.42	< .001	21.24	2.22	< .001
VRDQ	0.05	0.03	.077	0.05	0.03	.077	0.05	0.03	.077
Age	1.14	0.03	< .001	1.14	0.08	< .001	1.14	0.08	< .001
FXS	2.92	2.35	.218	3.45	2.17	.117	4.49	1.92	.022
TD	6.52	2.14	.003	7.13	2.02	.001	8.34	1.89	< .001
FXS × age	0.17	0.11	.122	0.17	0.11	.122	0.17	0.11	.122
TD × age	0.20	0.10	.039	0.20	0.10	.039	0.20	0.10	.039

ISSN: 1866-1955