|
Variables
|
Case(n = 613) n(%)
|
Control(n = 1226) n(%)
|
cOR(95% CI)†
|
aOR(95% CI)‡
|
|---|
|
Cigarette smoking
|
|
Never
|
278(45.4)
|
673(54.9)
|
Ref.
|
Ref.
|
|
Ever
|
335(54.6)
|
553(45.1)
|
1.47(1.21–1.78)
|
1.93(1.51–2.48)
|
|
Former
|
58(9.5)
|
93(7.6)
|
1.51(1.06–2.16)
|
1.95(1.32–2.87)
|
|
Current
|
277(45.2)
|
460(37.5)
|
1.46(1.19–1.79)
|
1.93(1.49–2.49)
|
|
Age of starting smoking (years)
|
|
Never
|
278(45.4)
|
673(54.9)
|
Ref.
|
Ref.
|
|
< 25
|
209(34.1)
|
325(26.5)
|
1.56(1.25–1.95)
|
2.09(1.59–2.75)
|
|
≥ 25
|
126(20.5)
|
228(18.6)
|
1.34(1.03–1.73)
|
1.72(1.28–2.33)
|
|
Smoking years
| | | | |
|
Never
|
278(45.4)
|
673(54.9)
|
Ref.
|
Ref.
|
|
< 30
|
135(22.0)
|
256(20.9)
|
1.28(0.99–1.64)
|
1.62(1.19–2.19)
|
|
≥ 30
|
200(32.6)
|
297(24.2)
|
1.63(1.30–2.05)
|
2.23(1.68–2.97)
|
|
Cigarettes per day
| | | | |
|
Never
|
278(45.4)
|
673(54.9)
|
Ref.
|
Ref.
|
|
< 19
|
107(17.5)
|
204(16.6)
|
1.27(0.97–1.67)
|
1.67(1.22–2.29)
|
|
≥ 19
|
228(37.2)
|
349(28.5)
|
1.58(1.27–1.97)
|
2.08(1.59–2.72)
|
|
Cumulative pack-years
| | | | |
|
Never
|
278(45.4)
|
673(54.9)
|
Ref.
|
Ref.
|
|
< 29
|
164(26.8)
|
299(24.4)
|
1.33(1.05–1.68)
|
1.73(1.30–2.31)
|
|
≥ 29
|
171(27.9)
|
254(20.7)
|
1.63(1.28–2.07)
|
2.18(1.63–2.91)
|
- †cOR: crude odds ratio; ‡aOR: adjusted odds ratio, adjusting for age, gender and alcohol drinking history
