Table 3.

Prevalence of ADHD, by age

Year	Age Group % of patients (95% CI)
	4–17	18–34	35–64
2008	6.92 (5.62, 8.39)	5.73 (4.40, 7.23)	5.20 (3.87, 6.73)
2009	6.99 (5.69, 8.49)	5.88 (4.57, 7.36)	5.22 (3.93, 6.74)
2010	7.35 (6.08, 8.81)	6.07 (4.76, 7.56)	5.27 (3.95, 6.75)
2011	7.63 (6.36, 9.08)	6.24 (5.00, 7.77)	5.32 (4.02, 6.81)
2012	7.87 (6.61, 9.37)	6.48 (5.18, 7.98)	5.36 (4.03, 6.89)
2013	8.14 (6.89, 9.60)	6.74 (5.45, 8.23)	5.43 (4.12, 6.93)
2014	8.40 (7.13, 9.86)	7.05 (5.74, 8.52)	5.48 (4.17, 7.00)
2015	8.57 (7.32, 10.00)	7.33 (6.04, 8.78)	5.54 (4.22, 7.02)

CI Confidence interval