Table 3. ORs of pancreatic cancer and 95% CIs by tertiles of TEAC and FRAP by selected covariates. Italy, 1991–2008.

		OR, 95% CIa
		TEAC, tertiles		FRAP, tertiles
	Cases:controls	II	III	II	III
Sex
Men	174:338	1.00 (0.57–1.78)	0.71 (0.39–1.29)	1.04 (0.59–1.83)	0.68 (0.38–1.23)
Women	152:304	0.70 (0.41–1.19)	0.55 (0.28–1.10)	0.73 (0.43–1.24)	0.61 (0.30–1.26)
P valueb		0.71		0.64
Age (years)
<65	186:372	0.85 (0.51–1.42)	0.58 (0.32–1.08)	0.91 (0.55–1.51)	0.62 (0.34–1.15)
⩾65	140:280	0.84 (0.47–1.51)	0.75 (0.39–1.45)	0.90 (0.50–1.61)	0.75 (0.39–1.47)
P valueb		0.48		0.49
BMI (kg m−2)
<25	139:264	0.93 (0.50–1.71)	0.88 (0.42–1.82)	1.06 (0.59–1.93)	0.78 (0.38–1.63)
⩾25	185:385	0.94 (0.55–1.60)	0.61 (0.34–1.10)	0.93 (0.54–1.59)	0.67 (0.37–1.21)
P valueb		0.98		0.70
Smoking statusc
Never	137:330	0.68 (0.39–1.21)	0.72 (0.36–1.44)	0.88 (0.50–1.57)	0.84 (0.42–1.57)
Ever	188:322	0.96 (0.55–1.68)	0.49 (0.27–0.91)	0.83 (0.48–1.43)	0.46 (0.25–0.86)
P valueb		0.30		0.36
Alcohol (tertiles)d
I	96:218	0.70 (0.36–1.34)	0.34 (0.11–1.07)	0.72 (0.38–1.37)	0.54 (0.17–1.70)
II	108:218	1.02 (0.54–1.93)	0.70 (0.32–1.52)	1.14 (0.60–2.16)	0.70 (0.32–1.54)
III	122:216	1.00 (0.38–2.64)	0.65 (0.28–1.55)	0.93 (0.35–2.44)	0.63 (0.27–1.49)
P valueb		0.76		0.96
History of diabetes
No	269:615	0.87 (0.58–1.30)	0.70 (0.44–1.12)	0.90 (0.60–1.35)	0.74 (0.47–1.19)
Yes	57:37	0.60 (0.15–2.43)	0.33 (0.05–2.35)	0.74 (0.16–3.40)	0.14 (0.02–1.19)
P valueb		0.67		0.44

Abbreviations: BMI=body mass index; CI=confidence interval; FRAP=ferric-reducing antioxidant power; OR=odds ratio; TEAC=Trolox equivalent antioxidant capacity.

^aEstimates from logistic regression models, conditioned on study centre, sex and age, and adjusted for year of interview, education, body mass index, tobacco smoking, alcohol intake, diabetes and energy intake according to the residual method. Reference category is the first tertile.

^bP for heterogeneity.

^cThe sum does not add up to the total because of some missing values.

^dOn the basis of the control distribution.