Table 2

Odds Ratios (OR) and 95% confidence intervals (CI) for pancreatic cancer (PanCA) associated with smoking status, intensity and duration, San Francisco Bay Area, California

PanCAa

Controlsa

N = 532

N = 1701

OR (95% CI)b

n (%)

n (%)


Never smoked

163 (32)

650 (40)

1.0 (Ref.)

Cigarette Smoking

Former smokerc

241 (47)

781 (48)

1.1 (0.87 - 1.4)

Current smokerd

112 (22)

197 (12)

1.9 (1.4 - 2.7)

P-trend

0.0002

Ever smoked cigars and/or pipese

100 (19)

334 (32)

0.88 (0.66 - 1.2)

Average cigarettes/day

<20

194 (38)

608 (37)

1.2 (0.92 - 1.5)

20-<40

137 (27)

329 (20)

1.4 (1.0 - 1.9)

40+

22 (4)

41 (3)

1.8 (0.99 - 3.1)

P-trend

0.008

Years smoked

<20

177 (34)

637 (39)

0.9 (0.68 - 1.7)

20-<40

64 (12)

144 (9)

1.3 (0.98 - 1.7)

40+

112 (22)

197 (12)

1.8 (1.3 - 2.4)

P-trend

0.0001

Pack years

<20

129 (25)

487 (30)

1.1 (0.81 - 1.4)

20-<40

110 (21)

310 (19)

1.2 (0.90 - 1.6)

40+

114 (22)

181 (11)

2.0 (1.5 - 2.8)

P-trend

<.0001


a The number of participants may vary because of missing data

b Adjusted for: age, education, race, ethnicity, diabetes, pancreatitis, gallbladder disease, alcohol intake and body mass index

c Includes smokers who quit ≥1 year prior to diagnosis/interview

d Includes former smokers who quit within the immediate 1 year prior to interview

e Includes cigar and pipe smokers who also smoked cigarettes and 16 cases and 73 controls who were cigar and/or pipe smokers who did not smoke cigarettes

Tranah et al. BMC Cancer 2011 11:138   doi:10.1186/1471-2407-11-138

Open Data