Table 4.

Step-wise regression predictors of child age at diagnosis

Overall	B	SE	t	p
Chronological age	0.22	0.02	12.75	< 0.001
Sex	−4.40	1.92	−2.30	0.022
Age of combining phrases	−0.02	0.004	−4.70	< 0.001
Intelligence	1.56	0.36	4.32	< 0.001
Age of first concern	0.53	0.05	11.80	< 0.001
Female
Chronological age	0.26	0.039	6.70	< 0.001
Age of first concern	0.45	0.101	4.43	< 0.001
Intelligence	1.71	0.840	2.03	0.043
Age of sitting	0.92	0.412	2.25	0.025
Male
Chronological age	0.20	0.019	10.47	< 0.001
Age of first concern	0.62	0.048	12.82	< 0.001
Intelligence	1.60	0.400	4.00	< 0.001
Age of combining phrasing	−0.02	0.005	−4.57	< 0.001