. 2009 Jan 16;19(2):198–205. doi: 10.1093/eurpub/ckn141

Table 4.

Summary of GEE model results for smokers and nonsmokers

Outcome	Smokers			Nonsmokers
	OR	95% CI	P-value	OR	95% CI	P-value
Support total ban in pubs
Pre-law: Scotland vs. UK	1.64	1.1–2.5	0.019	1.2	0.83–1.8	0.29
Post-law: Scotland vs. UK	3.2	2.2–4.7	<0.00010	3.8	2.3–6.0	<0.00010
	0.019^a; 0.015^b; 0.0069^c			0.29^a; 0.019^b; 0.00060^c
Support total ban in restaurant or café
Pre-law: Scotland vs. UK	1.23	0.92–1.6	0.16	0.90	0.53–1.5	0.70
Post-law: Scotland vs. UK	3	2.1–4.2	<0.00010	3.1847	1.5–6.9	0.0034
	0.16^a; 0.062^b; <0.00010^c			0.70^a; 0.25^b; 0.0089^c
Support total ban in workplace
Pre-law: Scotland vs. UK	1.1	0.81–1.5	0.55	1.1	0.68–1.7	0.76
Post-law: Scotland vs. UK	1.8	1.3–2.5	0.00040	1.2	0.72–2.0	0.49
	0.55^a; 0.20^b; 0.013^c			0.76^a; 0.22^b; 0.75^c

a: P-value for overall 1 d.f. test for country (UK vs. Scotland)

b: P-value for overall 1 d.f. test for wave (pre- vs. post-law)

c: P-value for 1 d.f. test for country × wave interaction. This is the key term of interest to assess the association with the Scottish smokefree law with the change in outcomes examined