Table 1. Self-reported exposure to secondhand smoke in non-smokers before (2004–05) and after (2011–12) the smoke-free legislation, Barcelona, Spain; results are stratified by setting.

Self-reported exposure to secondhand smoke	n	% of non-smokers exposed (95% CI)	Prevalence ratio* (95% CI)
Any setting **
Before the legislation	720	75.7 (72.6–78.8)	1
After the legislation	871	56.7 (53.4–60.0)	0.46 (0.40 to 0.54)
Home **
Before the legislation	721	32.5 (29.1–35.9)	1
After the legislation	878	27.6 (24.6–30.6)	0.78 (0.65 to 0.94)
Work/education venues **
Before the legislation	364	42.9 (37.8–48.0)	1
After the legislation	507	37.5 (33.3–41.7)	0.79 (0.63 to 0.98)
Leisure time **
Before the legislation	723	61.3 (57.7–64.9)	1
After the legislation	872	38.9 (35.7–42.1)	0.38 (0.32 to 0.44)
Public transportation **
Before the legislation	626	12.3 (9.7–14.9)	1
After the legislation	669	3.7 (2.3–5.1)	0.26 (0.16 to 0.41)
Private transportation **
Before the legislation	585	9.4 (7.0–11.8)	1
After the legislation	616	10.7 (8.3–13.1)	0.97 (0.67 to 1.41)

*Based on multivariate log-binomial models, adjusted for sex, age, and educational level.

**The figures do not sum the total because of missing values.