Int. J. Environ. Res. Public Health 2011, 8 Table 4. Cont. United States Mod. High Socioeconomic Status United Kingdomb All Low Mod. High All Low Australia Mod. High Variables Low Canada Mod. High All Low Former Smokers Total ban 96.2 91.2 93.9 92.7 60.5 56.0 64.2 60.1 36.4 33.3 26.3 32.0 85.7 92.1 86.7 Partial 0.0 6.1 5.6 5.4 23.6 25.0 22.3 23.7 30.4 25.9 39.5 30.5 11.6 4.5 8.6 None 3.8 2.7 0.5 1.9 15.9 19.0 13.5 16.2 33.2 40.8 34.2 37.5 2.7 3.4 4.7 n 26 137 99 262 46 105 82 233 63 144 73 280 49 192 103 Wave 6 a Current Smokers Total ban 96.0 93.8 95.7 95.0 69.9 64.1 63.8 65.0 95.2 97.5 97.8 97.1 90.7 94.0 94.7 Partial 2.3 4.6 3.5 3.7 16.1 18.4 17.7 17.7 2.3 1.7 1.9 1.9 2.9 3.0 2.8 None 1.7 1.6 0.8 1.3 14.0 17.5 18.5 17.3 2.5 0.8 0.3 1.0 6.4 3.0 2.5 n 254 604 721 1,579 323 628 674 1,625 360 632 466 1,458* 332 802 527 Former Smokers Total ban 91.9 93.3 95.9 94.4 58.3 60.7 61.4 60.9 95.9 100 97.3 98.2 93.3 94.0 97.5 Partial 0.0 5.8 4.1 4.3 28.0 15.5 20.7 19.7 1.4 0.0 1.8 0.9 4.4 2.4 1.9 None 8.1 0.9 0.0 2.3 13.7 23.8 17.9 19.4 2.7 0.0 0.9 0.9 2.3 3.6 0.6 n 40 104 141 285 31 88 122 241 87 134 112 333 48 153 154 Between Waves among Continuing Smokers Introduce smoke-free 3.5 4.4 2.2 3.6 18.5 14.9 14.0 15.3 57.2 69.0 69.0 66.0 11.0 9.8 13.9 Retain smoke-free 92.9 91.5 93.4 92.3 47.8 48.7 51.9 49.4 38.7 28.1 27.8 30.7 81.8 84.8 83.6 Retain smoking 1.8 2.1 1.6 1.9 31.5 32.1 31.1 31.7 2.9 2.5 2.3 2.6 3.6 2.6 0.8 Remove smoke-free 1.8 2.0 2.8 2.2 2.2 4.3 3.0 3.6 1.2 0.4 0.9 0.7 3.6 2.8 1.7 n 169 563 317 1,049 184 505 264 953 243 513 216 972 253 620 238 a Percentages are based on weighted data. b A national policy prohibiting smoking in all worksites, restaurants, and bars was implemented between Waves 5 and 6 in three of the four countries that comprise the United Kingdom. The fourth country, Scotland, implemented such a policy prior to Wave 5. * Statistically significant variation across groups (χ2, p < 0.05). 426 All 89.7 6.6 3.7 344 93.7 2.9 3.4 1,661 95.5 2.4 2.1 355 11.0 83.9 2.4 2.7 1,111