Int. J. Environ. Res. Public Health 2011, 8 Variables Wave 5 a Current Smokers Total ban Partial None n Former Smokers Total ban Partial None n Wave 6 a Current Smokers Total ban Partial None n Former Smokers Total ban Partial None n Table 1. Prevalence and introduction of smoke-free homes by socioeconomic status and country. Low 21.2 29.5 49.3 298 43.5 21.7 34.8 26 21.2 36.9 41.9 255 47.4 31.6 21.0 40 Canada Mod. High All Low United States Mod. High Socioeconomic Status United Kingdom b All Low Mod. High All Low Australia Mod. High 30.9 31.9 37.2 845 57.1 31.3 11.6 138 29.5 34.7 35.8 603 56.3 30.3 13.4 104 42.9 33.3 23.8 468 69.2 24.3 6.5 99 45.0 28.5 26.5 721 68.3 21.4 10.3 141 32.6 31.9 35.5 1,611 * 60.6 27.8 11.6 263 * 35.7 32.1 32.2 1,579 * 60.9 26.2 12.9 285 24.0 31.1 44.9 346 52.6 26.3 21.1 46 24.3 31.9 43.8 332 60.0 32.0 8.0 31 33.8 28.8 37.4 911 62.0 25.0 13.0 105 29.2 30.5 40.3 635 67.0 18.2 14.8 89 50.5 23.9 25.6 430 74.5 18.1 7.4 82 46.2 28.0 25.8 674 74.5 20.7 4.8 124 36.0 28.0 36.0 1,687 * 65.5 22.4 12.1 233 35.5 29.7 34.8 1,641 * 70.6 20.9 8.5 244 14.5 50.7 34.8 406 51.8 32.1 16.1 64 17.5 45.7 36.8 366 63.3 24.0 12.7 86 26.5 47.7 25.8 809 51.0 37.3 11.7 147 32.4 37.7 29.9 634 64.0 25.4 10.6 135 27.4 51.5 21.1 323 58.8 35.0 6.2 75 32.9 42.8 24.3 466 67.2 24.8 8.0 112 23.9 49.3 26.8 1,538* 53.4 35.6 11.0 286 29.4 41.2 29.4 1,466 * 65.0 24.9 10.1 333 34.1 31.8 34.1 369 66.6 16.7 16.7 50 36.8 30.9 32.3 341 74.0 13.0 13.0 50 49.6 29.5 20.9 950 73.3 20.3 6.4 191 52.5 28.9 18.6 811 72.9 18.3 8.8 155 49.1 31.4 19.5 360 63.2 32.1 4.7 104 53.3 28.7 18.0 529 77.2 18.5 4.3 154 418 All 46.4 30.4 23.2 1,679 * 69.4 23.4 7.2 345 * 50.1 29.2 20.7 1,681 * 74.9 17.7 7.4 359