Canada | Australia | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Per cent | OR | (95% CI) | AOR | (95% CI) | Per cent | OR | (95% CI) | AOR | (95% CI) | |
Age | ||||||||||
18–24 | 16 | 1 | 1 | 11 | 1 | 1 | ||||
25–34 | 14 | 0.83 | (0.57 to 1.21) | 0.71 | (0.47 to 1.06) | 10 | 0.93 | (0.59 to 1.48) | 0.89 | (0.55 to 1.45) |
35–44 | 14 | 0.82 | (0.56 to 1.20) | 0.65* | (0.43 to 0.99) | 8 | 0.71 | (0.44 to 1.16) | 0.68 | (0.40 to 1.14) |
45–54 | 11 | 0.60* | (0.41 to 0.90) | 0.45** | (0.29 to 0.69) | 7 | 0.58* | (0.35 to 0.96) | 0.58 | (0.34 to 1.00) |
55–64 | 12 | 0.67* | (0.45 to 0.99) | 0.52** | (0.33 to 0.80) | 9 | 0.77 | (0.47 to 1.26) | 0.78 | (0.47 to 1.31) |
Sex | ||||||||||
Male | 12 | 1 | 1 | 8 | 1 | 1 | ||||
Female | 14 | 1.2 | (0.94 to 1.52) | 1.16 | (0.90 to 1.50) | 9 | 1.2 | (0.89 to 1.62) | 1.22 | (0.89 to 1.66) |
Education | ||||||||||
High school or less | 13 | 1 | 1 | 7 | 1 | 1 | ||||
Some college or university | 15 | 1.21 | (0.94 to 1.56) | 1.25 | (0.95 to 1.63) | 9 | 1.27 | (0.91 to 1.75) | 1.28 | (0.92 to 1.79) |
Completed university or higher | 10 | 0.74 | (0.51 to 1.07) | 0.66* | (0.44 to 0.99) | 9 | 1.23 | (0.83 to 1.84) | 1.29 | (0.84 to 2.00) |
Income | ||||||||||
$29 999 or less | 14 | 1 | 1 | 8 | 1 | 1 | ||||
$30 000–$59 999 | 12 | 0.89 | (0.66 to 1.20) | 0.89 | (0.65 to 1.20) | 10 | 1.19 | (0.79 to 1.77) | 1.22 | (0.80 to 1.87) |
$60 000 or more | 14 | 0.99 | (0.75 to 1.33) | 1.07 | (0.79 to 1.45) | 9 | 1.08 | (0.75 to 1.56) | 1.09 | (0.73 to 1.62) |
HSI | 1.07 | (0.99 to 1.14) | 1.10* | (1.01 to 1.20) | 1.00 | (0.92 to 1.09) | 1.00 | (0.90 to 1.12) | ||
Cigarette consumption | ||||||||||
Non-daily | 11 | 1 | 1 | 8 | 1 | 1 | ||||
Daily | 14 | 1.21 | (0.90 to 1.63) | 1.23 | (0.84 to 1.79) | 9 | 1.10 | (0.75 to 1.61) | 1.33 | (0.84 to 2.12) |
Quit intention | ||||||||||
No | 11 | 1 | 1 | 7 | 1 | 1 | ||||
Yes | 17 | 1.64*** | (1.32 to 2.04) | 1.75*** | (1.37 to 2.24) | 11 | 1.42* | (1.08 to 1.87) | 1.20 | (0.87 to 1.65) |
Quit attempts | ||||||||||
No | 12 | 1 | 1 | 7 | 1 | 1 | ||||
Yes | 16 | 1.25 | (0.99 to 1.58) | 1.00 | (0.77 to 1.31) | 11 | 1.46** | (1.11 to 1.91) | 1.34 | (0.97 to 1.84) |
Wave | ||||||||||
1 (September 2012) | 14 | 1 | 1 | 6 | 1 | 1 | ||||
1 (January 2013) | 14 | 0.92 | (0.74 to 1.16) | 0.77 | (0.56 to 1.07) | 10 | 1.60** | (1.19 to 2.16) | 2.04*** | (1.40 to 2.99) |
3 (May 2013) | 12 | 0.83 | (0.66 to 1.05) | 0.53*** | (0.38 to 0.74) | 10 | 1.55** | (1.16 to 2.09) | 1.78* | (1.14 to 2.78) |
Time in sample | ||||||||||
1 wave | 13 | 1 | 1 | 9 | 1 | 1 | ||||
2 waves | 13 | 0.99 | (0.79 to 1.25) | 1.26 | (0.90 to 1.76) | 8 | 1.00 | (0.76 to 1.32) | 0.73 | (0.52 to 1.03) |
3 waves | 14 | 1.12 | (0.86 to 1.47) | 2.31*** | (1.53 to 3.49) | 9 | 1.17 | (0.87 to 1.58) | 0.96 | (0.59 to 1.54) |
*p<0.05; **p<0.01; ***p<0.001.
OR from crude analyses. AOR from multivariate analyses adjusting for all variables in the table.
AOR, adjusted OR; GEE, Generalised Estimating Equation; HSI, Heaviness of Smoking Index.