Table 1.

Sample characteristics. Percent of children identified as having ADHD symptoms (according to the reporters identified at the top of the column) whom also had the characteristic listed on the left.

Characteristic		Any ADHD based on				Non-ADHD by All 3
		Parent + Teacher	Parent + Physician	Teacher + Physician	Any 2 or All 3
Maternal
Racial identity	White	8	12	9	17	82
	Black	11	13	15	21	76
	Other	10	10	9	13	79
Hispanic	Yes	7	12	7	12	84
	No	9	13	11	18	80
Age, years	< 21	11	20	16	27	68
	21–35	9	12	11	17	82
	> 35	7	8	6	12	85
Education, years	≤ 12	12	17	15	23	75
	> 12, < 16	9	11	11	16	83
	≥ 16	7	10	5	13	86
Single marital Status	Yes	12	16	16	22	74
	No	7	10	7	14	85
Public insurance	Yes	13	19	17	26	72
	No	7	9	7	13	85
Newborn
Sex	Male	13	15	14	22	75
	Female	5	10	6	13	86
Gestational age, weeks	23–24	11	19	14	25	74
	25–26	10	12	11	17	80
	27	7	9	8	13	85
Birth weight, Grams	≤ 750	11	15	13	20	78
	751–1000	7	10	8	14	83
	> 1000	10	14	10	19	80
Birth weight Z-score	< –2	4	12	8	14	87
	≥ −2, < −1	10	13	8	17	81
	≥ −1	9	13	10	18	80
Education
IEP	Yes	14	19	17	27	71
	No	3	5	3	7	92
Repeated Grade	Yes	14	22	17	29	68
	No	8	10	9	15	84
Remedial Class	Yes	17	17	21	26	68
	No	7	11	8	15	84
Current ADHD medication	Yes	22	53	38	65	32
	No	6	4	5	8	91
N ADHD (N total)		57 (634)	109 (871)	66 (637)	152 (874)	511 (634)