TABLE 2.

Smoke-Free Legislation and Hospital Admission Rates for Childhood Asthma; Stratified Subgroup Analysis

	Smoke-Free Law	95% CI	Time After Smoke-Free Law (per y)	95% CI
Sex
Male	0.90	(0.87–0.93)	0.96	(0.95–0.98)
Female	0.93	(0.90–0.96)	0.97	(0.95–0.98)
Age group
Preschool	0.94	(0.91–0.97)	0.97	(0.95–0.98)
School age	0.88	(0.86–0.91)	0.96	(0.95–0.97)
Area
Urban	0.91	(0.89–0.94)	0.97	(0.96–0.98)
Rural	0.91	(0.87–0.96)	0.96	(0.94–0.98)
SES
Quintile 1 (least deprived)	0.94	(0.89–0.99)	0.96	(0.93–0.98)
Quintile 2	0.91	(0.87–0.96)	0.97	(0.95–0.99)
Quintile 3	0.86	(0.82–0.90)	0.97	(0.95–0.99)
Quintile 4	0.92	(0.87–0.96)	0.96	(0.94–0.98)
Quintile 5 (most deprived)	0.93	(0.89–0.98)	0.96	(0.94–0.98)
Region
Northeast	0.90	(0.82–0.97)	0.99	(0.96–1.03)
Northwest	0.93	(0.88–0.98)	0.99	(0.96–1.02)
Yorkshire and Humber	0.90	(0.84–0.96)	0.97	(0.94–0.99)
East Midlands	1.01	(0.94–1.09)	0.92	(0.89–0.95)
West Midlands	0.92	(0.86–0.99)	1.02	(0.99–1.05)
East of England	0.91	(0.85–0.98)	0.99	(0.96–1.03)
London	0.89	(0.84–0.95)	0.98	(0.95–1.01)
Southeast coast	0.82	(0.76–0.88)	0.95	(0.92–0.99)
South central	0.99	(0.91–1.07)	0.89	(0.86–0.93)
Southwest	0.88	(0.83–0.94)	0.90	(0.87–0.93)

All results based on full multivariate model except stratifying variable