A proposed approach in defining population-based rates of major injury from a trauma registry dataset: Delineation of hospital catchment areas (I)

Table 5 Patient origin matrix for NSRI and the hospitals in the region understudy labelled according to the postcode district location (data in bold represent cases per district corresponding to the hospital main provider)

	All the postcode districts within ST postcode area
Hospitals in the region	ST1	ST2	ST3	ST4	ST5	ST6	ST7	ST8	ST9	ST10	ST11	ST12	ST13	ST14	ST15	ST16	ST17	ST18	ST19	ST20	ST21
ST4	379	459	737	645	968	822	453	203	122	291	107	37	290	22	61	40	28	15	10	9	19
ST16	-		9	9	-	-	-			10	5		-	43	153	231	344	140	113	37	56
SK10	-	-	-	-	-	-	14	12	-	6		-	21	-
SK2*					-	-							-			-		-
CW1*	-	-	-	-	5	-	44	-						-							-
TF1*							-											-		-
WV10	-															-	-		15
WS2			-		-	-												-	-
DE13*		-	-			-			-	-	-	-		142	-	-					-
DE1														-	-	-		-

Source: Trauma Audit and Research Network & Hospital Episode Statistics (Health and Social Care Information Centre)
e.g. 737 cases with residence ST3 were admitted to NSRI – the highest number in the column, therefore NSRI is main ST3 provider – cells with under 5 cases suppress (data protection requirements)
*data over shorter time periods then 1997–2004, depending on the number of years TARN membership per hospital NSRI, Stoke on Trent (ST4), Staffordshire General Hospital, Stoke on Trent (ST16), Macclesfield District General Hospital, Stockport (SK10), Stepping Hill Hospital, Stockport (SK2), Leighton Hospital, Crewe (CW1), Princess Royal Hospital, Telford (TF1), New Cross Hospital, Wolverhampton (WV10), Manor Hospital, Walsall (WS2), Queen's Hospital, Derbyshire (DE13) and Derbyshire Royal Infirmary (DE1)

ISSN: 1472-6963