Table 1.

Referral rates for the population and referral rates per episode of illness by ICPC category in 1987 and 2001.

		Number		Population-based referral ratea		Episode-based referral rateb
		1987 (3 months)	2001 (12 months)	1987	2001	1987	2001
A	General and unspecified	175	531	8	7	4	4
B	Blood, blood-forming organs	21	38	1	0.5	7	4
D	Digestive	196	563	9	7	6	6.5
F	Eye	379	771	17.5	10	28	18
H	Ear	388	839	18	10.5	11	8
K	Circulatory	38	130	2	1.5	31	32
L	Musculoskeletal	524	698	24	9	13	6
N	Neurological	90	206	4	2.5	18	8.5
P	Psychological	42	291	2	3.5	8	14
R	Respiratory	443	1008	20.5	13	4	4.5
S	Skin	464	871	21.5	11	7	4
T	Endocrine, metabolic	70	160	3	2	22	20
U	Urology	28	125	1.5	1.5	5	6.5
W	Pregnancy	22	14	1	0.2	10	1
X	Female genital system	22	54	1	0.5	5	3.5
Y	Male genital system	85	294	4	3.5	29	28
Z	Social problems	9	15	0.5	0.2	4	4.5
Total		2997	6608	138.0	84.0	8.0	6.5

^apopulation-based referral rate: new referrals per 1000 children per year.

^bepisode-based referral rate: new referrals per 100 new episodes. ICPC = International Classification of Primary Care.