Table 3. ARIMA modelling outcomes for three Dutch smoking cessation policies of RSV data from the Netherlands and Belgium (corrected for Belgian interventions).

		The Netherlands		Belgium (control group)
	Period	Estimated ratio of change in RSV	95% CI	Estimated ratio of change in RSV	95% CI
Smoking ban restaurants and bars 2008
Weeks before intervention	9–16	0.98	(0.89–1.07)	1.01	(0.90–1.12)
	5–8	0.95	(0.84–1.07)	1.03	(0.91–1.18)
	3–4	0.99	(0.86–1.13)	0.99	(0.84–1.15)
	2	1.02	(0.87–1.18)	0.98	(0.82–1.19)
	1	0.97	(0.83–1.14)	1.05	(0.87–1.27)
Weeks after intervention	1	1.21*	(1.04–1.42)	1.01	(0.84–1.22)
	2	1.41*	(1.21–1.64)	1.07	(0.89–1.29)
	3–4	1.25*	(1.08–1.43)	0.95	(0.81–1.13)
	5–8	1.08	(0.96–1.22)	1.02	(0.88–1.18)
	9–16	1.04	(0.94–1.15)	0.96	(0.84–1.10)
	17–32	0.99	(0.91–1.08)	0.91	(0.81–1.02)
	33–52	0.99	(0.92–1.07)	0.95	(0.86–1.05)
Reimbursement SCS 2011
Weeks before intervention	9–16	0.98	(0.89–1.07)	1.09	(0.98–1.20)
	5–8	1.06	(0.94–1.20)	1.25*	(1.09–1.43)
	3–4	0.94	(0.82–1.08)	1.05	(0.89–1.22)
	2	1.00	(0.86–1.16)	1.10	(0.92–1.32)
	1	1.07	(0.89–1.21)	0.83	(0.69–1.00)
Weeks after intervention	1	1.04	(0.85–1.17)	0.86	(0.71–1.04)
	2	0.98	(0.84–1.14)	1.10	(0.91–1.32)
	3–4	1.16*	(1.01–1.33)	1.26*	(1.07–1.48)
	5–8	1.21*	(1.08–1.37)	1.19*	(1.03–1.38)
	9–16	1.18*	(1.06–1.30)	1.20*	(1.04–1.35)
	17–32	1.22*	(1.13–1.33)	0.95	(0.81–1.10)
	33–52	1.20*	(1.13–1.33)	0.99	(0.89–1.09)
Reimbursement SCS 2013
Weeks before intervention	9–16	1.03	(0.94–1.13)	0.86*	(0.76–0.97)
	5–8	1.01	(0.90–1.14)	0.84*	(0.70–0.98)
	3–4	1.02	(0.89–1.17)	0.87	(0.70–1.04)
	2	0.98	(0.84–1.14)	0.94	(0.75–1.14)
	1	1.03	(0.88–1.21)	0.89	(0.69–1.09)
Weeks after intervention	1	0.85*	(0.72–0.99)	0.80*	(0.66–0.98)
	2	0.99	(0.85–1.15)	1.01	(0.82–1.23)
	3–4	1.17*	(1.02–1.34)	0.89	(0.74–1.27)
	5–8	1.14*	(1.01–1.29)	0.88	(0.74–1.05)
	9–16	1.21*	(1.09–1.33)	0.91	(0.76–1.08)
	17–32	1.09*	(1.00–1.19)	0.96	(0.79–1.16)
	33–52	1.08	(1.00–1.18)	0.95	(0.77–1.17)

CI: confidence interval

* Significant at P<0.05.