Table 3.

Group Differences on Child Risk Factors for Children With and Without Delays

	Non-delayed (N = 143)		Delayed (N = 103)
	N	%	N	%	χ2
Risk factors
Child physical illness	50	35	64	62.1	χ2 = 17.30***
Child spec.ed./mental health	28	19.6	88	85.4	χ2 = 105.10***
Infancy sickly	27	18.9	34	33	χ2 = 6.77**
	M	SD	M	SD	T
Risk factors
Bayley-II MDI	104.66	11.40	57.62	11.26	t = −32.10***
Negative parenting total	9.39	2.45	11.87	3.45	t = 5.97***
Demandingness total	12.10	5.13	15.34	6.38	t = 3.55**

Note.

^**p < .01.

^***p < .001.

BSID-II MDI = Bayley Scales of Infant Development-II Mental Development Index.