Table 1.

Prevalence of ADHD, Service, Medication, Psycho-Stimulant Use and Caretaker Attitudes in Two Contexts

	Puerto Rico						South Bronx						Site Difference
	Wave 1		Wave 2		Wave 3		Wave 1		Wave 2		Wave 3		Wave 1	Wave 2	Wave 3
	Estimate %	SE	Estimate %	SE	Estimate %	SE	Estimate %	SE	Estimate %	SE	Estimate %	SE	Diff	Diff	Diff
Prevalence of ADHD	6.4	0.8	4.7	0.6	4.2	0.7	7.1	0.9	6.0	0.7	4.5	0.7	−0.7	−1.3	−0.3
Prevalence of ADHD-NOS	7.3	0.8	5.2	0.7	4.4	0.6	7.3	0.7	5.6	0.6	4.1	0.6	0.0	−0.4	0.3
Service Use	12.5	1.1	14.3	1.3	13.6	1.3	19.2	1.2	22.5	1.3	21.5	1.4	−6.7****	−8.2****	−7.9****
Medication Use	2.8	0.5	3.1	0.5	3.3	0.5	5.7	0.8	5.9	0.7	5.8	0.8	−2.9**	−2.8***	−2.5**
Psycho-Stimulant Use	1.5	0.3	1.9	0.4	1.8	0.4	3.4	0.6	3.0	0.5	2.9	0.6	−1.9**	−1.1$	−1.1
Service Use among ADHD	40.7	5.8	49.1	6.8	53.8	8.2	51.0	5.6	60.9	5.8	64.0	6.9	−10.3	−11.8	−10.2
Service Use among ADHD-NOS	19.5	5.0	41.9	6.2	42.4	7.2	47.0	4.6	56.5	5.9	50.8	6.5	−27.5****	−14.6$	−8.4
Medication Use among ADHD	15.9	4.6	25.5	6.2	22.2	6.9	22.9	5.3	20.9	5.0	28.1	6.9	−7.0	4.6	−5.9
Medication Use among ADHD- NOS	8.2	3.3	10.4	4.1	20.9	5.7	12.9	3.1	21.4	4.9	18.7	5.2	−4.7	−11$	2.2
Psycho-Stimulant Use among ADHD	8.8	3.4	18.2	5.2	9.5	4.1	13.8	3.9	11.9	4.0	17.3	5.3	−5.0	6.3	−7.8
Psycho-Stimulant Use among ADHD-NOS	7.0	3.1	9.2	3.8	11.2	4.1	7.4	2.5	6.0	2.9	7.7	3.8	−0.4	3.2	3.5
Caretaker Attitude toward Medication
No	42.9	1.9	40.4	2.1	39.4	2.2	65.7	1.8	57.3	1.7	57.7	1.8	−22.8****	−16.9****	−18.3****
Maybe	27.7	1.8	31.8	2.0	34.2	2.2	14.3	1.1	20.4	1.5	16.3	1.3	13.4****	11.4****	17.9****
Yes	29.4	2.1	27.8	2.1	26.4	2.5	20.0	1.6	22.3	1.6	26.1	1.5	9.4****	5.5*	0.3

Site differences are tested across each corresponding wave

^*p<.05

^**p<.01

^***p<.001

^****p<.0001

^$p= 0.06 – 0.10