TABLE 1.

Study Population and Diagnoses

Birth Year	Population		ASD		ADHD		Epilepsy		CP
	Boys	Girls	Boys	Girls	Boys	Girls	Boys	Girls	Boys	Girls
1999	32 062	30 431	354	85	1336	458	333	253	101	90
2000	31 859	30 355	264	63	1152	365	287	219	116	57
2001	30 506	29 267	270	52	904	302	274	200	104	72
2002	29 777	28 759	252	49	649	202	232	195	94	67
2003	30 447	29 245	245	49	407	129	233	159	87	78
2004	30 703	29 327	178	47	196	74	180	170	105	74
2005	30 520	29 231	157	33	85	29	229	154	103	80
2006	31 333	29 848	100	33	31	12	189	153	93	65
2007	31 119	29 648	57	22	6	4	164	135	74	49
2008	32 055	30 211	27	9	2	2	141	132	68	44
2009	32 376	30 588	3	3	1	3	113	82	40	26
2010	31 574	30 077	0	0	2	1	31	40	2	7
Total	374 331	356 987	1907	445	4771	1581	2406	1892	987	709

Includes diagnoses registered in the Norwegian Patient Register (NPR) from 2008-10. ADHD diagnoses in children born in 2009 and 2010 were assumed to be registration errors and were not included in the other tables and figures.