Table 3.

HRs and 95% CI (CI) of death following stage III ovarian cancer according to smoking habits

VariablesAdjusted HR* (95% CI), n = 293Adjusted HR (95% CI), n = 290
Smoking status
    Never smoker1.00 (Reference)1.00 (Reference)
    Former smoker0.97 (0.71-1.34)0.93 (0.67-1.30)
    Current smoker1.36 (1.00-1.84)1.65 (1.22-2.24)
Duration of smoking (y)
    ≤90.51 (0.25-1.05)0.54 (0.26-1.12)
    10-190.55 (0.27-1.11)0.62 (0.30-1.27)
    20-291.08 (0.65-1.78)1.06 (0.64-1.76)
    30-391.11 (0.70-1.76)1.14 (0.71-1.81)
    ≥401.00 (Reference)1.00 (Reference)
        Per 5 y1.06 (0.99-1.13)1.05 (0.98-1.13)
Maximum daily tobacco use (g/d)
    ≤90.98 (0.57-1.67)1.03 (0.60-1.76)
    10-140.78 (0.48-1.29)0.84 (0.51-1.39)
    15-191.04 (0.62-1.74)1.05 (0.62-1.76)
    20-241.00 (Reference)1.00 (Reference)
    ≥251.18 (0.67-2.07)1.23 (0.70-2.18)
        Per 5 g1.04 (0.94-1.14)1.04 (0.94-1.15)
Time since stop of smoking (y)
    <51.66 (0.91-3.04)1.91 (1.02-3.56)
    5-141.55 (0.85-2.83)1.57 (0.85-2.89)
    ≥151.00 (Reference)1.00 (Reference)
        Per 5 y0.91 (0.83-1.00)0.89 (0.80-0.98)
  • * Adjusted for current age, radicality of surgery, histology, platinum-based chemotherapy, and smoking status.

  • Adjusted for current age, radicality of surgery, histology, platinum-based chemotherapy, smoking status, and continuous BMI 5 years before diagnosis.