Table 2

Prevalence, prevalence ratio (PR), adjusted prevalence ratio (PRa) and their 95% CIs of the voluntary adoption of smoke-free homes (SFHs) rules (complete and partial) before (2004–2005) and after (2013–2014) the implementation of both Spanish smoking bans

 Any type of rules (complete and partial) Complete rules Partial rules
naPre %Post %PR (95% CI)PRa (95% CI)Pre %Post %PR (95%CI)PRa (95%CI)Pre %Post %PR (95% CI)PRa (95% CI)
Overall73155.672.61.31 (1.22 to 1.40)*** 1.30 (1.20 to 1.41)*** 23.937.61.57 (1.36 to 1.83)*** 1.61 (1.35 to 1.93)*** 31.735.01.11 (0.96 to 1.27)1.07 (0.91 to 1.26)
Sex
 Men33651.868.81.33 (1.18 to 1.50)*** 1.31 (1.14 to 1.49)*** 21.535.71.66 (1.29 to 2.12)*** 1.64 (1.24 to 2.16)** 30.333.11.10 (0.88 to 1.36)1.07 (0.84 to 1.37)
 Women39558.875.91.29 (1.18 to 1.41)*** 1.28 (1.16 to 1.42)*** 25.939.31.51 (1.26 to 1.82)*** 1.60 (1.28 to 2.01)*** 32.936.61.11 (0.93 to 1.33)1.04 (0.84 to 1.29)
Age
 26–4441857.576.61.33 (1.21 to 1.47)*** 1.29 (1.15 to 1.43)*** 22.537.21.65 (1.32 to 2.07)*** 1.63 (1.24 to 2.14)*** 35.139.61.13 (0.94 to 1.36)1.08 (0.88 to 1.33)
 45–6420152.367.01.28 (1.14 to 1.44)*** 1.34 (1.17 to 1.53)*** 21.533.11.53 (1.19 to 1.98)** 1.73 (1.29 to 2.31)*** 30.733.91.10 (0.89 to 1.38)1.08 (0.84 to 1.39)
 65–9811254.367.61.24 (1.04 to 1.49)* 1.29 (1.05 to 1.59)* 33.547.61.42 (1.09 to 1.85)* 1.48 (1.09 to 2.00)* 20.820.00.96 (0.62 to 1.51)0.96 (0.53 to 1.73)
Educational level
 Low23956.468.51.21 (1.08 to 1.36)** 1.25 (1.10 to 1.43)** 25.135.51.41 (1.13 to 1.77)** 1.48 (1.10 to 1.99)** 31.233.01.05 (0.86 to 1.31)1.07 (0.83 to 1.37)
 Intermediate20656.967.91.19 (1.04 to 1.36)** 1.21 (1.05 to 1.40)** 23.235.61.55 (1.14 to 2.09)** 1.59 (1.13 to 2.25)** 33.832.10.95 (0.72 to 1.25)0.96 (0.70 to 1.32)
 High28653.979.61.47 (1.30 to 1.67)*** 1.41 (1.23 to 1.60)*** 23.440.71.74 (1.35 to 2.23)*** 1.76 (1.31 to 2.37)*** 30.538.91.27 (1.01 to 1.61)* 1.14 (0.87 to 1.50)
Married
 Yes49158.271.81.23 (1.13 to 1.34)*** 1.26 (1.15 to 1.38)*** 24.237.71.55 (1.30 to 1.86)*** 1.61 (1.31 to 1.97)*** 33.934.11.00 (0.85 to 1.19)1.01 (0.83 to 1.22)
 No24052.573.81.40 (1.24 to 1.59)*** 1.34 (1.17 to 1.54)*** 23.537.51.60 (1.25 to 2.04)*** 1.61 (1.18 to 2.20)** 2936.21.25 (0.99 to 1.58)1.14 (0.87 to 1.50)
Minimum age in house
 0–46278.687.61.12 (0.98 to 1.27)1.06 (0.95 to 1.18)27.340.51.48 (0.95 to 2.30)NC51.347.10.92 (1.67 to 1.27)NC
 5–1411267.475.91.13 (0.95 to 1.34)1.13 (0.94 to 1.35)27.836.91.32 (0.89 to 1.98)NC39.639.00.99 (0.71 to 1.36)1.00 (0.72 to 1.40)
 ≥1549149.669.61.40 (1.27 to 1.54)*** 1.41 (1.26 to 1.57)*** 22.636.21.60 (1.33 to 1.93)*** 1.62 (1.27 to 2.05)*** 2733.41.23 (1.02 to 1.49)* 1.23 (0.98 to 1.55)**
Smoking status (baseline)
 Current25255.962.71.12 (0.98 to 1.28)1.11 (0.95 to 1.30)1417.81.27 (0.83 to 1.93)1.33 (0.78 to 2.28)24.828.11.07 (0.89 to 1.30)1.07 (0.86 to 1.33)
 Former18856.875.61.33 (1.18 to 1.50)*** 1.27 (1.11 to 1.46)** 28.242.91.52 (1.18 to 1.96)** 1.36 (1.03 to 1.80)* 41.844.91.14 (0.86 to 1.50)1.20 (0.88 to 1.63)
 Never29154.579.41.46 (1.30 to 1.64)*** 1.45 (1.29 to 1.64)*** 29.751.41.73 (1.42 to 2.10)*** 1.95 (1.54 to 2.46)*** 28.632.61.13 (0.85 to 1.50)0.94 (0.67 to 1.31)
Intention to quit
 Yes2356.262.31.11 (0.67 to 1.82)1.09 (0.46 to 2.59)22.120.30.92 (0.25 to 3.35)NC3441.91.23 (0.54 to 2.80)NC
 No17458.358.91.01 (0.88 to 1.16)1.04 (0.89 to 1.21)9.411.51.23 (0.70 to 2.15)NC48.947.50.97 (0.81 to 1.16)1.00 (0.80 to 1.26)
FTCD
 ≥412165.765.10.99 (0.85 to 1.15)1.00 (0.82 to 1.21)16.113.80.85 (0.49 to 1.48)NC49.651.31.03 (0.83 to 1.29)1.04 (0.77 to 1.40)
 52351.843.30.84 (0.45 to 1.56)NC011.751.831.50.61 (0.32 to 1.15)NC
 >52738.554.21.41 (0.85 to 2.34)NC09.338.544.91.17 (0.72 to 1.89)NC
  • *p<0.05, **p<0.01, ***p<0.001.

  • na: the sum does not up the total for some variables because of some missing values.

  • PRa: prevalence ratio adjusted for sex, age and month when the survey was conducted.

  • Pre: before Spanish smoke-free bans (2004–2005).

  • Post: after Spanish smoke-free bans (2013–2014).

  • NC, non-converging GEE model with random effects.