Skip to main content

Table 2 Hazard ratiosa for lung cancer mortality according to smoking status and continuous measures of exposure

From: Smoking related lung cancer mortality by education and sex in Norway

Smoking status

Cases

Men

HR 95%CI

Cases

Women

HR 95%CI

Heterogeneity test for men versus women

P-values

Never

91

1.00 (ref)

188

1.00 (ref)

 

Former

459

4.08 (3.25–5.11)

208

2.71 (2.22–3.30)

0.01

Current

2773

20.05 (16.25–24.74)

1983

13.97 (11.98–16.29)

0.01

Duration of smoking, 10-years

b

2761

1.36 (1.28–1.44)

1969

1.65 (1.54–1.78)

< 0.01

Cigarettes smoked per day, 10 per day

b

2676

1.48 (1.42–1.54)

1974

1.76 (1.66–1.86)

< 0.01

Pack-years (10 years)

b

2269

1.39 (1.35–1.44)

1965

1.61 (1.54–1.69)

< 0.01

  1. a Multivariable Hazard ratios (95% CI) adjusted for body mass index, physical activity level, all at enrollment, and level of education
  2. bPer 10-year increase in smoking duration, per 10-cigarettes increase number of cigarettes smoked per day, per 10 increase
  3. in pack-years, for current smokers