Changes in trend of female smoking prevalence before and after market liberalisation
| Age group (years) | 1965 to 1985 slope (95% CI) | 1985 to 1995 slope (95% CI) |
| 20–29 | 2.64 (2.33 to 2.95) | 3.35 (3.09 to 3.61) |
| 30–39 | 0.26 (0.15 to 0.37) | 2.55 (2.29 to 2.81) |
| 40–49 | −1.33 (−1.54 to −1.12) | 0.45 (0.25 to 0.65) |
| 50–59 | −3.13 (−3.74 to −2.52) | 0 (−0.23 to 0.23) |
| 60+ | −2.66 (−2.80 to −2.52) | −2.25 (−2.68 to −1.82) |