Table 2.

Distribution of youths with ADHD who received medications from 2000 to 2011 in Taiwan

	Total (≤18 years)			≤6 years			7–12 years			13–18 years
Year	Case	Prop.	Prev.	Case	Prop.	Prev.	Case	Prop.	Prev.	Case	Prop.	Prev.
2000	3329	50.2	57.6	174	14.3	9.6	2563	55.7	132.3	592	72.4	29.2
2001	4473	50.1	79.0	199	13.3	11.4	3397	54.8	174.2	877	71.5	44.7
2002	6017	49.5	108.5	236	11.8	14.1	4512	54.0	232.9	1269	70.0	65.7
2003	7385	50.6	136.0	221	10.5	14.0	5351	53.6	275.8	1813	72.0	94.8
2004	10 196	50.9	190.8	324	10.6	21.2	7029	53.4	372.5	2843	74.3	147.2
2005	14 102	54.3	269.0	325	9.4	22.4	9455	56.0	512.9	4322	76.7	221.8
2006	18 361	58.0	367.1	314	9.1	23.3	12 020	58.1	658.0	6027	80.0	312.3
2007	24 187	60.4	473.6	287	7.1	22.1	15 731	60.7	894.3	8169	80.8	420.2
2008	29 445	62.8	604.8	294	6.7	23.4	18 462	62.2	1097.1	10 689	83.0	553.4
2009	31 858	62.3	671.4	289	6.1	23.7	19 208	61.1	1210.0	12 361	82.4	638.2
2010	31 801	59.5	692.0	247	5.1	21.1	18 482	57.0	1201.0	13 072	80.9	693.7
2011	33 698	61.0	754.0	157	3.5	13.5	18 903	57.8	1290.8	14 638	81.1	795.2
Statistic value	t = 16.02 p < 0.001	t = 6.97 p < 0.001	t = 16.32 p < 0.001	t = 0.60 p = 0.565	t = −25.43 p < 0.001	t = 2.30 p = 0.044	t = 18.85 p < 0.001	t = 2.83 p = 0.018	t = 15.40 p < 0.001	t = 14.90 p < 0.001	t = 6.76 p < 0.001	t = 14.66 p < 0.001

Note: Prop.: The proportion of youths with ADHD who received medication, in which the denominator is the annual number of ADHD patients and the numerator is the annual number of ADHD case who used ADHD medications. Prev. (per 100 000): The annual prevalence rates of ADHD medication use among the national population, in which the denominator is the total population and the numerator is the annual number of cases who used ADHD medications.