Table 2.

Diagnostic trends in inpatient, outpatient, and primary care settings according to national databases compared over time

Publication: source of database	Description	Time 1 1996	Time 2 2004
Blader and Carlson (2007): Nationally  representative sample of hospital  discharges	% of discharges with a primary psychiatric diagnosis
	Children	7.5	9.7
	Adolescents	13.6	18.9
	Adults	6.5	≈6.5
	% of primary psychiatric diagnosis discharges with a bipolar diagnosis
	Children	10.0	34.1
	Adolescents	10.2	25.9
	Adults	9.9	14.9
	Population-based rates of discharges with a primary psychiatric diagnosis per 100,000  people
	Children	139	214
	Adolescents	498	789
	Adults	1050	1085
	Population-based rates of primary psychiatric diagnosis discharges with a bipolar  diagnosis per 100,000 people
	Children	14	73
	Adolescents	51	204
	Adults	104	162
		1995	2000
Harpaz-Rotem et al. (2005) and Harpaz-Rotem and Rosenheck (2004): Private  health insurance company claims	% of inpatients with a bipolar diagnosis	11.0	18.0a
	% of outpatients with  a bipolar diagnosis	0.9	1.5a
	Outpatient males
	0–6 years	0.2	0.6a
	7–12 years	0.4	1.0a
	13–17 years	1.4	1.9a
	Outpatient females
	0–6 years	0.2	0.6
	7–12 years	0.4	1.0a
	13–17 years	1.8	2.6a
		1994–1995	2002–2003
Moreno et al. (2007):  Representative sample  of office-based physicians	% of mental health-related visits with  a primary bipolar diagnosis	0.4	6.7
	Population-based rates of office-based  visits with a primary bipolar  diagnosis per 100,000 youth	25	1003

^ap < .001