Table 1.

Demographic Features by Autism Status

		Autism		Typical
		#	%	#	%
Sex of Child	Male	39262	83	5040978	50.9
	female	8015	17	4857588	49.1
	missing	0	0	53	0
Age of Mother	<=20	3868	8.2	1461021	14.8
	21–25	9275	19.6	2395298	24.2
	26–30	12993	27.5	2694787	27.2
	30–35	12722	26.9	2178470	22
	35–40	7005	14.8	989378	10
	41+	1414	3	179665	1.8
Maternal Race / Ethnicity	Non-Hispanic White	16338	34.6	3146357	31.8
	African American	3592	7.6	630985	6.4
	Hispanic	19407	41	4848114	49
	Asian	4430	9.4	672919	6.8
	Pacific islander	2914	6.2	480223	4.9
	Other	596	1.3	120021	1.2
Parity	Nulliparous	20954	44.3	3888247	0.1
	1	15831	33.5	3088250	39.3
	2	6486	13.7	1679092	31.2
	3	2484	5.3	726289	17
	4	889	1.9	286237	7.3
	5 or higher	607	1.3	225509	2.9
	missing	26	0.1	4995	2.3
Payer	MediCal	17239	36.5	4619776	46.7
	Private insurance	16567	35	2851239	28.8
	Managed care	12193	25.8	2099325	21.2
	Self pay/uninsured	765	1.6	244081	2.5
	Other insurance	423	0.9	61644	0.6
	missing	90	0.2	22554	0.2