Table 4.
No of deaths from all causes and death rate ratios among current smokers compared with never smokers by sex, year of birth, and age at starting smoking
| Men | Women | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Born before 1920 | Born 1920-45 | Born before 1920 | Born 1920-45 | ||||||||
| No of deaths | Rate ratio (95% CI) v never smokers* | No of deaths | Rate ratio (95% CI) v never smokers* | No of deaths | Rate ratio (95% CI) v never smokers* | No of deaths | Rate ratio (95% CI) v never smokers* | ||||
| Current smokers | |||||||||||
| Age started smoking (years): | |||||||||||
| <20 | 1272 | 1.66 (1.54 to 1.79) | 1121 | 2.21 (1.97 to 2.48) | 68 | 1.54 (1.21 to 1.95) | 51 | 2.61 (1.98 to 3.44) | |||
| 20-29 | 4862 | 1.42 (1.34 to 1.51) | 1674 | 1.71 (1.53 to 1.91) | 369 | 1.53 (1.38 to 1.70) | 311 | 2.01 (1.79 to 2.25) | |||
| ≥30 | 657 | 1.17 (1.07 to 1.29) | 40 | 1.48 (1.07 to 2.05) | 677 | 1.26 (1.16 to 1.36) | 200 | 1.40 (1.22 to 1.62) | |||
| P value for trend | <0.00001 | <0.00001 | 0.001 | <0.00001 | |||||||
| Unknown age started smoking | 232 | 2.85 (2.48 to 3.28) | 254 | 2.04 (1.74 to 2.39) | 833 | 1.78 (1.65 to 1.91) | 169 | 1.94 (1.67 to 2.27) | |||
| All ages | 7023 | 1.46 (1.38 to 1.54) | 3089 | 1.89 (1.70 to 2.10) | 1947 | 1.51 (1.43 to 1.58) | 731 | 1.81 (1.67 to 1.96) | |||
| Never smokers | |||||||||||
| All ages | 1592 | — | 404 | — | 10 595 | — | 3755 | — | |||
*Rate ratios stratified for age and calendar period.