Table 6
Odds ratios relating changes in workplace smoking restrictions and other selected characteristics to employed smokers' quitting in a two-year period, household population aged 15 or older, Canada excluding territories, 1996/1997 to 2004/2005

Standard symbols

 
Unadjusted odds ratio
95% confidence interval
Adjusted odds ratio
95% confidence interval
Smoking restricted at work (at end of two-year period)
Totally
2.4*
1.5 to 3.7
2.3*
1.4 to 3.9
Partially
1.3
0.8 to 2.1
1.1
0.7 to 1.8
No
1.0
1.0
Cigarettes per day
25 or more (heavy)
0.5*
0.3 to 0.9
0.5*
0.3 to 0.9
10 to 24 (moderate)
1.0
1.0
1 to 9 (light)
0.9
0.4 to 1.9
1.0
0.5 to 2.1
Occasional smoker
4.4*
2.6 to 7.5
4.4*
2.4 to 7.9
Sex
Men
1.5
0.9 to 2.3
1.7*
1.0 to 2.8
Women
1.0
1.0
Age group
15 to 34
1.2
0.8 to 1.8
0.9
0.6 to 1.4
35 to 54
1.0
1.0
55 or older
1.3
0.7 to 2.4
1.0
0.6 to 1.8
Education
Less than secondary graduation
1.0
1.0
Secondary graduation
1.0
0.6 to 1.7
1.1
0.6 to 1.9
Some postsecondary
0.9
0.5 to 1.4
0.9
0.6 to 1.6
Postsecondary graduation
1.0
0.6 to 1.7
0.9
0.5 to 1.6
Household income quintile
1 Lowest
0.9
0.4 to 1.7
1.2
0.6 to 2.2
2
0.8
0.4 to 1.5
0.9
0.5 to 1.8
3
1.0
1.0
4
1.5
0.8 to 2.7
1.4
0.8 to 2.7
5 Highest
1.0
0.6 to 1.9
1.0
0.6 to 1.8
Occupation
White-collar
1.0
0.7 to 1.6
0.9
0.6 to 1.5
Sales/Service
0.9
0.5 to 1.5
0.8
0.5 to 1.4
Blue-collar
1.0
1.0
† Based on employed smokers who faced no restrictions on smoking at work at beginning of two-year period
‡ Reference category
* Significantly different from estimate for reference category (p < 0.05)
Source: 1996/1997 to 2004/2005 National Population Health Survey, longitudinal Health file (square).