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. Author manuscript; available in PMC: 2007 Dec 14.

Published in final edited form as: Cancer Causes Control. 2007 Jul 24;18(9):919–929. doi: 10.1007/s10552-007-9026-4

Table 3.

Adjusted odds ratios for smoking associated with oral cancer relative to OED stratified by drinking and smoking status^a

	Drinking status
	Current (n = 290)	Former/Never (n = 108)
Pack-year equivalents
0	1.0	1.0
>0–<20	0.80 (0.32–1.98)	0.91 (0.24–3.41)
20–<50	0.37 (0.16–0.89)	0.54 (0.15–1.95)
50+	0.49 (0.20–1.20)	0.52 (0.13–2.14)
Trend P	0.06	0.29
Smoking status
Never	1.0	1.0
Ex-smoker	0.50 (0.21–1.17)	1.15 (0.32–4.13)
Current smoker	0.52 (0.23–1.20)	0.44 (0.13–1.45)
Trend P	0.25	0.15
	Smoking Status
	Current (n = 222)	Former (n = 151)
Pack-year equivalents
<20	1.0	1.0
20– < 50	0.37 (0.15–0.92)	0.79 (0.34–1.85)
50+	0.52 (0.19–1.39)	0.57 (0.21–1.56)
Trend P	0.50	0.27

^a

OR adjusted for age (four levels), gender, alcohol consumption (four levels), education (three levels), and pathology laboratory