Table 2.

The table shows the use of drugs for ADHD according to gender in two age cohorts in counties of northern Norway. When five or less users were detected, no information was given and marked with #

County	Users per 1,000 inhabitants											t-test P-value
	Age	Sex	2004	2005	2006	2007	2008	2009	2010	2011	Mean
Nordland	0-9	F	2.1	2.5	2.1	2.4	3.5	3.2	3.4	3.0	2.8	-
	0-9	M	7.6	9.6	8.0	8.1	10.9	10.9	12.6	10.4	9.8	-
Troms	0-9	F	1.1	1.5	2.0	1.7	2.6	2.4	1.3	0.9	1.7	< 0.004*
	0-9	M	4.0	4.8	4.9	7.2	6.7	7.3	7.7	7.4	6.3	< 0.001*
Finnmark	0-9	F	#	1.3	#	1.4	#	1.7	2.2	2.5	1.8	< 0.003*
	0-9	M	5.3	5.5	5.7	5.9	6.0	7.0	7.2	8.2	6.3	< 0.001*
Nordland	10-19	F	8.0	12.3	15.0	16.9	20.7	25.4	26.7	24.7	18.7	-
	10-19	M	22.8	31.0	34.9	38.2	43.1	45.7	47.8	46.9	38.8	-
Troms	10-19	F	4.8	6.5	7.3	10.0	12.3	12.5	13.0	12.7	9.9	< 0.001*
	10-19	M	13.9	16.9	18.4	21.7	26.1	26.5	28.1	31.0	22.8	< 0.001*
Finnmark	10-19	F	6.8	7.9	10.0	13.1	15.4	15.4	11.8	11.8	11.5	< 0.004*
	10-19	M	26.7	28.6	30.1	30.8	28.6	30.4	27.0	31.6	29.2	< 0.014*