Table 2 Estimated total cost (£000) of intervention and control sites for a 3‐month period January–March in 2004 and 2005 by category of resource use.

	Before (January–March 2004)		After (January–March 2005)
	Intervention ED	Control ED	Intervention combined ED and WIC	Control ED
Doctors	3086	3323	4172	4055
Nurses	4904	4297	6062	4740
Other clinical staff	161	39	198	48
All clinical staff	8151	7659	10432	8843
Other fixed and semi‐fixed costs	3502	1997	4452	2266
Total fixed and semi‐fixed costs	11653	9656	14884	11109
Investigations	1656	2696	2080	2895
Medication	280	157	213	164
Onward referral (outpatients)	2263	2892	2209	2797
Re‐consultations*	1041	988	1229	1044
Total variable costs	5240	6733	5731	6900
Total cost	16893	16389	20615	18009

ED, emergency department; WIC; walk‐in centre.

*Including general practitioner, practice nurse, walk‐in centre or NHS Direct.