Proportion of smokers in each sex and age group for each survey year from 1980 to 2001
| 1980 | 1983 | 1986 | 1989 | 1992 | 1995 | 1998 | 2001 | p Value year | Interaction | |
|---|---|---|---|---|---|---|---|---|---|---|
| Sex | ||||||||||
| Male | 40% | 38% | 32% | 29% | 28% | 28% | 27% | 25% | <0.01 | |
| Female | 30% | 29% | 28% | 27% | 24% | 24% | 25% | 21% | <0.01 | |
| People | 35% | 33% | 30% | 27% | 26% | 26% | 26% | 23% | <0.01 | <0.01 |
| OR | 1.8 | 1.7 | 1.5 | 1.3 | 1.2 | 1.2 | 1.2 | 1 | ||
| 95% CI | 1.7 to 2.0 | 1.6 to 1.9 | 1.4 to 1.6 | 1.2 to 1.4 | 1.1 to 1.3 | 1.1 to 1.3 | 1.1 to 1.3 | |||
| Age | ||||||||||
| 18–24 | ||||||||||
| Male | 54% | 43% | 41% | 37% | 35% | 33% | 33% | 31% | ||
| Female | 41% | 46% | 39% | 39% | 35% | 36% | 31% | 28% | ||
| People | 47% | 45% | 40% | 38% | 35% | 35% | 32% | 30% | <0.01 | .16 |
| OR | 2.1 | 1.9 | 1.6 | 1.5 | 1.3 | 1.3 | 1.1 | 1 | ||
| 95% CI | 1.8 to 2.6 | 1.6 to 2.3 | 1.4 to 1.8 | 1.2 to 1.7 | 1.1 to 1.5 | 1.1 to 1.5 | 1.0 to 1.3 | |||
| 25–29 | ||||||||||
| Male | 46% | 48% | 38% | 37% | 36% | 34% | 32% | 33% | ||
| Female | 42% | 34% | 39% | 35% | 33% | 34% | 35% | 27% | ||
| People | 44% | 41% | 39% | 36% | 35% | 35% | 34% | 30% | <0.01 | 0.04 |
| OR | 1.82 | 1.59 | 1.48 | 1.29 | 1.22 | 1.23 | 1.18 | 1 | ||
| 95% CI | 1.5 to 2.3 | 1.3 to 1.9 | 1.2 to 1.8 | 1.1 to 1.6 | 1.0 to 1.5 | 1.0 to 1.5 | 0.99 to 1.4 | |||
| 30–39 | ||||||||||
| Male | 40% | 41% | 33% | 35% | 32% | 32% | 34% | 30% | ||
| Female | 35% | 31% | 30% | 29% | 28% | 30% | 32% | 26% | ||
| People | 37% | 36% | 32% | 32% | 30% | 39% | 33% | 28% | <0.01 | 0.51 |
| OR | 1.54 | 1.43 | 1.17 | 1.23 | 1.09 | 1.13 | 1.27 | 1 | ||
| 95% CI | 1.3 to 1.8 | 1.2 to 1.6 | 1.1 to 1.3 | 1.1 to 1.4 | 1.0 to 1.3 | 1.0 to 1.3 | 1.1 to 1.4 | |||
| 40–59 | ||||||||||
| Male | 44% | 38% | 32% | 25% | 28% | 28% | 26% | 24% | ||
| Female | 27% | 30% | 27% | 25% | 23% | 21% | 25% | 20% | ||
| People | 36% | 34% | 29% | 25% | 26% | 24% | 26% | 22% | <0.01 | <0.01 |
| OR | 1.98 | 1.83 | 1.51 | 1.19 | 1.24 | 1.16 | 1.23 | 1 | ||
| 95% CI | 1.8 to 2.3 | 1.6 to 2.1 | 1.4 to 1.7 | 1.5 to 1.3 | 1.1 to 1.4 | 1.0 to 1.3 | 1.1 to 1.4 | |||
| 60+ | ||||||||||
| Male | 22% | 26% | 22% | 18% | 16% | 15% | 12% | 11% | ||
| Female | 18% | 17% | 17% | 15% | 12% | 12% | 12% | 8% | ||
| People | 20% | 21% | 19% | 17% | 14% | 13% | 12% | 10% | <0.01 | 0.46 |
| OR | 2.3 | 2.5 | 2.3 | 1.9 | 1.5 | 1.4 | 1. 3 | 1 | ||
| 95% CI | 1.9 to 2.8 | 2.1 to 3.0 | 1.9 to 2.6 | 1.5 to 2.3 | 1.2 to 1.8 | 1.2 to 1.8 | 1.1 to 1.5 | |||