Table 2.

Frequency of each diagnostic class at each index diagnostic level

	Index Diagnosis 1			Index Diagnosis 2			Index Diagnosis 3
	N	%	Age	N	%	Age	N	%	Age
Anxiety and stress-related disorders	2353	26.56	12.54	353	20.7	14.04	33	16.75	15.08
Affective disorders	2317	26.15	13.22	346	20.29	14.72	23	11.68	14.38
Pervasive developmental disorders	1271	12.65	9.74	276	16.19	12.00	37	18.78	12.86
Conduct and impulse disorders	1139	12.86	10.76	163	9.56	12.25	16	8.12	11.38
Hyperkinetic disorders	1121	12.65	9.92	388	22.76	10.18	23	11.68	12.08
Eating disorders	336	3.79	13.53	43	2.52	15.23	12	6.09	16.62
Disorders of social functioning	159	1.79	8.84	27	1.58	11.23	5	2.54	13.95
Schizophrenia and related disorders	116	1.31	15.14	50	2.93	15.70	12	6.09	16.22
Personality disorders	27	0.3	16.51	52	3.05	16.20	34	17.26	16.22
Gender identity disorders	20	0.23	14.81	7	0.41	15.60	n < 5*	–	–
Total	8859	100.0	11.78	1705	100.0	12.91	197	100.0	14.27

*CRIS data security policies preclude the reporting of cell sizes where n < 5