Table 2. ARIMA modelling outcomes for Belgian smoking cessation policies of Belgian RSV data.

	Period	Estimated ratio of change in RSV	95% CI
Smoking ban restaurants 2007 (small establishments excluded)
Weeks before intervention	9–16	1.07	(0.95–1.20)
	5–8	0.99	(0.85–1.16)
	3–4	1.00	(0.84–1.21)
	2	1.14	(0.92–1.40)
	1	0.93	(0.75–1.15)
Weeks after intervention	1	1.11	(0.89–1.37)
	2	1.42*	(1.14–1.75)
	3–4	1.11	(0.92–1.35)
	5–8	1.05	(0.88–1.25)
	9–16	1.05	(0.89–1.24)
	17–32	1.01	(0.87–1.17)
	33–52	0.98	(0.88–1.10)
Smoking ban diners at public places 2007
Weeks before intervention	9–16	1.02	(0.89–1.15)
	5–8	1.05	(0.90–1.22)
	3–4	1.00	(0.83–1.20)
	2	1.00	(0.81–1.24)
	1	1.07	(0.86–1.33)
Weeks after intervention	1	1.03	(0.83–1.27)
	2	1.09	(0.88–1.35)
	3–4	0.97	(0.80–1.18)
	5–8	1.04	(0.87–1.24)
	9–16	0.97	(0.83–1.14)
	17–32	0.93	(0.81–1.08)
	33–52	0.99	(0.88–1.11)
Smoking ban food services places (small establishments excluded)
Weeks before intervention	9–16	0.95	(0.85–1.07)
	5–8	1.00	(0.86–1.17)
	3–4	1.02	(0.85–1.23)
	2	1.07	(0.86–1.31)
	1	1.04	(0.84–1.29)
Weeks after intervention	1	0.99	(0.80–1.23)
	2	1.04	(0.84–1.29)
	3–4	0.96	(0.79–1.17)
	5–8	1.02	(0.85–1.21)
	9–16	1.00	(0.85–1.17)
	17–32	1.01	(0.87–1.17)
	33–52	0.96	(0.86–1.08)
Smoking ban all restaurants and snack points
Weeks before intervention	9–16	0.90	(0.80–1.01)
	5–8	0.95	(0.81–1.10)
	3–4	1.01	(0.84–1.22)
	2	0.94	(0.73–1.15)
	1	0.97	(0.76–1.16)
Weeks after intervention	1	0.89	(0.72–1.10)
	2	0.90	(0.73–1.12)
	3–4	1.14	(0.94–1.38)
	5–8	1.00	(0.84–1.19)
	9–16	0.95	(0.81–1.11)
	17–32	0.96	(0.84–1.11)
	33–52	0.99	(0.88–1.11)

CI: confidence interval

* Significant at P<0.05.