Table 2.

The percent of children with the clinical characteristics identified on the left who screened positive on the M-CHAT

	Characteristic		M-CHAT Positive (Row %)	Row N
Motor	GMFCS*	≥ 2	83	46
		1	60	35
		< 1	17	907
	Cerebral palsy	Quadriparesis	73	55
		Hemiparesis	44	18
		Diparesis	29	34
		None	17	881
	PDI	< 55	57	152
		55–69	28	152
		≥70	12	684
Sensory	Vision**	Yes	68	25
		No	20	963
	Hearing**	Yes	68	19
		No	21	969
Cognitive	MDI	< 55	61	148
		55–69	35	110
		≥70	11	730
Other	Mental age ≤ 16 months	Yes	50	220
		No	13	768
	Gender	Male	25	513
		Female	18	475
	Referent group	Yes†	10	572
		Yes††	16	852

^*GMFCS ≥ 2: cannot walk, even with assistance: GMFCS = 1: cannot walk independently, but can with assistance

^**by parent report (blind in one or both eyes; hearing aids or services for hearing impairment)

^†No cerebral palsy diagnosis, MDI ≥ 70, PDI ≥ 70, no reported limitation of vision or hearing

^††No cerebral palsy diagnosis, no reported limitation of vision or hearing