Explanatory variables | OR | 95% CI |
---|---|---|
Age (years | ||
18 to 24 | 1 | |
25 to 39 | 1.51 | 0.98 to 2.32 |
40 to 54** | 2.59 | 1.69 to 3.98 |
55or more** | 4.27 | 2.72 to 6.72 |
Sex | ||
Male | 1 | |
Female** | 0.59 | 0.45 to 0.76 |
Education | ||
Primary graduate or less | 1 | |
Secondary** | 0.50 | 0.37 to 0.67 |
High school graduate** | 0.32 | 0.22 to 0.45 |
College or more** | 0.23 | 0.15 to 0.34 |
Income | ||
Low (MX$0 to MX$3000) | 1 | |
Medium (MX$3001 to MX$5000) | 0.88 | 0.72 to 1.07 |
High (MX$5001 or more)* | 0.79 | 0.63 to 0.99 |
Don't know | 0.92 | 0.68 to 1.23 |
Smoking status | ||
Less than daily | 1 | |
Daily, five cigarettes per day or less | 1.22 | 0.98 to 1.53 |
Daily, more than five cigarettes per day** | 1.68 | 1.34 to 2.11 |
Waves of participation** | 1.26 | 1.15 to 1.37 |
Survey wave | ||
2008 | 1.11 | 0.95 to 1.30 |
2010 | 1 | |
2011 | 0.93 | 0.80 to 1.08 |
Observations | 4601 |
*p<0.05, **p<0.01.
GEE, generalised estimating equations.