Table 2

Change in the number and proportion of serious and fatal RTA casualties by road user and study area from 1997–1999 to 2012–2014

	Pedestrian			Driver or rider			Passenger
Study area	1997–1999	2012–2014	% Change	1997–1999	2012–2014	% Change	1997–1999	2012–2014	% Change
Glasgow and surrounding local authorities	1703	571	−66.5	1504	585	−61.1	863	208	−75.9
Intervention area (South, M74 extension)	210	101	−51.9	121	61	−49.6	79	17	−78.5
Comparator area (East, M8 motorway)	111	39	−64.9	54	28	−48.1	32	11	−65.6
Control area (North)	122	38	−68.9	59	19	−67.8	33	5	−84.8
	ANOVA p=0.013 F=3.60*			ANOVA p=0.157 F=1.74			ANOVA p=0.535 F=0.73

*Differences between each study area were tested (six comparisons) and remained significant only for differences between Glasgow and surrounding local authorities and intervention area (South, M74 extension) (T=3.25, p=0.007, 95% CI 0.016 to 0.158).
ANOVA, analysis of variance.