The potential role of cost-utility analysis in the decision to implement major system change in acute stroke services in metropolitan areas in England

Table 5 Total number of strokes treated and total QALYs for a fixed yearly budget of £40 million

	Before	After	Difference	Before	After	Difference	DID
	London			England
Number of strokes treated per year	4001	3522	−480	3959	3736	−222	−257
QALYs 1 year	1560	1608	49	1500	1653	152	−104
QALYs 5 years	8342	8943	602	7946	9026	1080	−479
QALYs 10 years	13,047	14,067	1020	12,382	14,122	1740	−720
	GM			England
Number of strokes treated per year	3947	3716	−231	4017	3771	−246	15
QALYs 1 year	1470	1619	150	1494	1659	165	−15
QALYs 5 years	7782	8966	1184	7900	9054	1154	30
QALYs 10 years	12,122	14,056	1934	12,304	14,164	1860	75

GM Greater Manchester, QALYs quality adjusted life years, DID difference-in-difference

ISSN: 1478-4505