Table 2

Parental smoking by smoking restrictions in the home before and after smoke-free legislation, Scotland

Restriction type	2006*					2007*					Total*
	Number of smoking parent figures					Number of smoking parent figures					Number of smoking parent figures
	Neither smoke	One, father only	One, mother only	Two smoke	Total†	Neither smoke	One father only	One mother only	Two smoke	Total	Neither smoke	One father only	One mother only	Two smoke	Total
	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)
Complete	71.2 (67.7 to 74.5)	20.1 (14.9 to 26.5)	10.8 (7.7 to 15.1)	9.0 (5.8 to 13.6)	47.3 (43.9 to 50.8)	79.3 (76.0 to 82.2)	29.7 (23.6 to 36.6)	10.0 (7.0 to 14.2)	8.0 (5.4 to 11.7)	51.8 (48.1 to 55.4)	75.0 (72.4 to 77.5)	24.9 (20.9 to 29.3)	10.4 (8.2 to 13.2)	8.5 (6.3 to 11.5)	49.5 (46.3 to 52.6)
Partial	24.9 (21.7 to 28.5)	51.5 (44.0 to 58.9)	49.2 (42.9 to 55.4)	43.3 (37.1 to 49.6)	34.2 (31.5 to 36.9)	18.4 (15.8 to 21.3)	50.0 (42.7 to 57.3)	58.3 (52.3 to 64.0)	55.9 (49.8 to 61.9)	34 (31.5 to 36.7)	21.8 (19.4 to 24.5)	50.7 (45.2 to 56.3)	53.7 (49.3 to 58.0)	49.3 (44.8 to 53.7)	34.1 (32.0 to 36.2)
None	3.8 (2.8 to 5.2)	28.4 (21.2 to 37.0)	40.0 (33.2 to 47.2)	47.8 (41.2 to 54.4)	18.5 (16.0 to 21.3)	2.4 (1.5 to 3.6)	20.3 (14.8 to 27.3)	31.7 (26.1 to 37.9)	36.0 (30.4 to 42.1)	14.2 (12.1 to 16.5)	3.1 (2.5 to 3.9)	24.4 (19.8 to 29.7)	35.9 (31.5 to 40.6)	42.2 (37.8 to 46.7)	16.4 (14.6 to 18.5)
Total	1147	204	295	289	1935	1018	202	290	261	1771	2165	406	585	550	3706

*Pearson χ² = 767.423 (2006); 793.631(2007); df = 6, p<0.001 (association between type of restriction and number/gender of smoking parents).
†Pearson χ² = 14.23, df = 2, p<0.001 (association between type of restriction and survey year).
Cotinine confirmed non-smoking pupils who reported living with both parents, step or single parents.