Table 2.

Level of voluntary adoption of smoke-free rules at home in Barcelona (Spain) in 2013–2014, according to the perceived risk of the exposure to secondhand smoke

		Complete indoor ban			Partial or absent indoor ban
	n	Per cent	PR (95% CI)	PRa (95% CI)	Per cent	PR (95% CI)	PRa (95% CI)
SHS bothers you
Disagree	31	40.8	1	1	59.2	1	1
Agree	700	58.2	1.42 (0.88 to 2.30)	1.44 (0.89 to 2.33)	41.8	0.71 (0.50 to 0.99)*	0.70 (0.50 to 0.98)*
Breathing tobacco smoke from smokers is harmful
Disagree	36	37.7	1	1	62.3	1	1
Agree	690	58.7	1.56 (1.01 to 2.40)*	1.51 (0.97 to 2.34)	41.3	0.66 (0.50 to 0.87)**	0.67 (0.51 to 0.87)**
SHS is dangerous for adults
Disagree	35	40.7	1	1	59.3	1	1
Agree	692	58.4	1.43 (0.95 to 2.16)	1.38 (0.91 to 2.10)	41.6	0.70 (0.52 to 0.94)*	0.72 (0.54 to 0.96)*
SHS is dangerous for children
Disagree	25	52.0	1	1	48.0	1	1
Agree	705	57.8	1.11 (0.74 to 1.67)	1.09 (0.72 to 1.66)	42.2	0.88 (0.57 to 1.37)	0.89 (0.58 to 1.38)
Secondhand smoke is dangerous for non-smokers
Disagree	35	32.5	1	1	67.5	1	1
Agree	692	59.0	1.81 (1.09 to 3.02)*	1.77 (1.06 to 2.97)*	41.0	0.61 (0.47 to 0.79)***	0.63 (0.49 to 0.81)***

n not always sum up due to missing data.

*p<0.05, **p<0.01, ***p<0.001.

PR, prevalence ratio; PRa, prevalence ratio adjusted for sex and age.