Table 1. Absolute changes in cerebral infarction incidence referent to pre-legislation slope.

			Step change on 26 March 2006		Change in slope post 26 March 2006
		n	% (95% CI)	P value	% (95% CI)	P value
Overall *		35,308	−8.90 (−12.77, −4.85)	<0.001	−0.40 (−1.86, 1.07)	0.590
Sex	male	17,855	−9.49 (−15.40, −3.17)	0.004	0.06 (−2.24, 2.43)	0.957
	female	17,453	−8.32 (−12.99, −3.39)	0.001	−0.85 (−2.60, 0.93)	0.347
Age (years)	<60	5,652	−9.26 (−13.50, −4.82)	<0.001	0.19 (−1.46, 1.87)	0.821
	≥60	29,656	−7.42 (−15.65, 1.61)	0.105	−3.32 (−5.45, −1.15)	0.003
Residence	urban	25,233	−8.68 (−13.14, −3.99)	<0.001	−0.59 (−2.45, 1.31)	0.540
	rural	10,075	−9.39 (−16.64, −1.50)	0.021	0.11 (−1.97, 2.23)	0.919
Deprivation	1 affluent	5,171	−10.88 (−16.41, −4.98)	<0.001	−2.01 (−3.50, −0.54)	0.007
quintile	2	5,950	−6.92 (−10.33, −3.37)	<0.001	1.30 (0.15, 2.46)	0.027
	3	6,790	−13.29 (−24.87, 0.07)	0.051	−2.93 (−6.05, 0.30)	0.181
	4	8,212	−1.73 (−12.56, 10.43)	0.769	0.41 (−1.91, 2.77)	0.733
	5 deprived	9,185	−10.31 (−14.81, −5.59)	<0.001	2.42 (−3.00, 8.13)	0.389

CI confidence interval.

^*adjusted for sex, age, residence and deprivation quintile.