Table 2

Compliance of NICE guidelines

CT head n (%) (95% CI)	SRFT before implementation		SRFT after implementation		RBFT after implementation
CT head n (%) (95% CI)	Indicated	Not indicated	Indicated	Not indicated	Indicated	Not indicated
Adult CT performed	64 (18.4) (16.4 to 20.5)	11 (3.2) (2.2 to 4.1)	41 (10.0) (8.5 to 11.5)	4 (0.9) (0.5 to 1.5)	26 (7.4) (5.9 to 8.8)	1 (0.3) (0.0 to 0.6)
Adult CT not performed	9 (2.6) (1.7 to 3.4)	263 (75.8) (73.5 to 78.1)	1 (0.2) (0.0 to 0.5)	363 (88.8) (87.2 to 90.3)	15 (4.3) (3.2 to 5.3)	311 (88.1) (86.4 to 89.8)

Child CT performed	6 (4.4) (2.7 to 6.2)	0	5 (2.8) (1.6 to 4.1)	0	8 (1.9) (1.4 to 2.9)	0
Child CT not performed	9 (6.6) (4.5 to 8.8)	121 (88.9) (86.3 to 91.7)	11 (6.2) (4.4 to 8.0)	161 (90.9) (88.8 to 93.1)	27 (7.3) (5.9 to 8.6)	335 (90.8) (89.3 to 92.3)

NICE, National Institute for Health and Clinical Excellence; RBFT, Royal Bolton Hospital Foundation NHS Trust; SRFT, Salford Royal Foundation NHS Trust.