Table 2.

The percent of children who had the characteristic at the top of the column who also had the characteristic listed on the left. These are column percents.

Maternal characteristics		Maternal pre-pregnancy BMI (kg/m2)			ADHD symptoms identified by
					Parent		Teacher
		< 25	25,<30	≥ 30	Yes	No	Yes	No
Racial identity	White	72	55	60	64	67	55	73
	Black	20	30	29	27	23	35	20
	Other	7	15	12	9	10	11	8
Hispanic	Yes	5	15	13	7	9	7	8
Maternal age	< 21	15	11	7	18	11	16	11
	21-35	65	66	73	69	66	65	65
	> 35	20	22	20	13	23	18	24
Years of education	< 12	36	46	39	48	36	50	37
	12 to < 16	21	22	35	19	24	27	22
	≥ 16	44	32	26	32	39	22	40
Single	Yes	64	64	56	53	65	64	66
Self supported?	Yes	68	70	69	69	69	39	39
Public insurance	Yes	29	34	38	44	29	43	29
Pre-pregnancy  Body Mass  Index (BMI)	<25				46	62	54	58
	25, <30				25	18	21	19
	≥ 30				30	20	25	23
Fertility assistance	Yes	27	21	21	19	26	15	25
Maximum column N		450	149	165	151	613	121	441

ADH^DSM = Attention deficit/hyperactivity entity according to criteria in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition