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. 2014 Aug 18;17(1):41–47. doi: 10.1093/ntr/ntu125

Table 3.

Number of Cigarettes Smoked per Day and Quit Attempts Between May 2006 and December 2007 Among Continuing Smokers, According to the Evolution of Smoking Restrictions at Home

May 2006 December 2007 Paired t test
M (SD) M (SD)
Cigarettes smoked per day among continuing smokers (n = 900) 15.70 (9.54) 15.06 (9.04) 2.80**
 In households that remained smoke-free (n = 141) 10.61 (9.79) 10.12 (8.10) 0.92
 In households that became smoke-free (n = 53) 11.91 (7.84) 10.35 (7.70) 1.90
 In households that regressed to allowing smoking (n = 53) 12.04 (9.94) 12.84 (9.04) 0.91
 In households that remained smoking (n = 653) 17.41 (9.02) 16.69 (8.78) 2.58*
Cigarettes smoked per day inside the home among continuing smokers (n = 695) 12.18 (8.14) 11.45 (8.41) 2.71**
 In households that remained smoke-free (n = 142) a 0.50 (2.04)
 In households that became smoke-free (n = 53) 6.63 (6.25) 1.43 (3.64) 6.25***
 In households that regressed to allowing smoking (n = 50) a 7.18 (5.92)
 In households that remained smoking (n = 642) 12.63 (8.12) 12.28 (8.15) 1.29
% (95% CI) χ2
Cessation attempt between May 2006 and December 2007 4.86
 Households that remained smoke-free (n = 146) 37.7 (29.8–45.5)
 Households that became smoke-free (n = 54) 44.4 (31.2–57.7)
 Households that regressed to allowing smoking (n = 54) 35.2b (22.7–49.4)
 Households that remained smoking (n = 659) 31.9 (28.3–35.4)

aRespondents who indicated having a total smoking ban enforced at home in May 2006 were not asked how many cigarettes they smoked inside their home on a daily basis.

bMarginal estimate (coefficient of variation > 16.6%).

*p < .05; **p < .01; ***p < .001.