Table 2 Hazard ratio and 95% confidence intervals for all-cause mortality between ages 36 and 60 years by smoking trajectories, most recent smoking status and smoking status at 25 years
All-cause mortality HR (95% CI)
Men (n = 1647)Women (n = 1639)All (n = 3286)
Smoking trajectories (n)
    Never smoker (921)111
    Predominantly non-smoker (1086)1.46 (0.83 to 2.56)0.99 (0.51 to 1.92)1.30 (0.86 to 1.99)
    Predominantly smoker (692)1.82 (1.02 to 3.25)1.13 (0.55 to 2.35)1.61 (1.03 to 2.50)
    Lifelong smoker (587)2.34 (1.30 to 4.19)4.21 (2.41 to 7.33)3.21 (2.14 to 4.79)
Most recent smoking status (n)
    Never smoker (921)111
    Former smoker (1114)1.30 (0.74 to 2.27)1.09 (0.56 to 2.11)1.28 (0.84 to 1.95)
    Current smoker (1251)2.32 (1.37 to 3.92)2.42 (1.42 to 4.13)2.39 (1.64 to 3.48)
Smoking status at 25 years (n)
    Never smoker (917)111
    Former smoker (738)2.35 (1.32 to 4.18)0.56 (0.25 to 1.27)1.50 (0.97 to 2.32)
    Current smoker (1152)1.59 (0.90 to 2.79)2.24 (1.32 to 3.79)1.90 (1.29 to 2.79)
    Missing (479)1.71 (0.90 to 3.25)2.21 (1.14 to 4.26)1.95 (1.24 to 3.07)