Table 2. Distribution of 326 pancreatic cancer case and 652 control patients and corresponding ORsa and 95% CIs by tertiles of three energy-adjusted TAC indices. Italy, 1991–2008.
|
Tertilesb |
|||||
|---|---|---|---|---|---|
| Mean (SD)a | I | II | III | P for trend | |
| TEAC | 4.39 (2.30) | ||||
| Cases:controls | 119:217 | 105:218 | 102:217 | ||
| Upper cutoff points (mmol Trolox per day)c | 3.67 | 4.77 | — | ||
| OR (95% CI)d | 1e | 0.82 (0.56–1.20) | 0.61 (0.39–0.94) | 0.028 | |
| TRAP | 4.51 (2.81) | ||||
| Cases:controls | 114:217 | 105:218 | 107:217 | ||
| Upper cutoff points (mmol Trolox per day)c | 3.47 | 5.00 | — | ||
| OR (95% CI)d | 1e | 0.84 (0.57–1.24) | 0.78 (0.49–1.24) | 0.27 | |
| FRAP | 11.23 (5.98) | ||||
| Cases:controls | 117:218 | 111:217 | 98:217 | ||
| Upper cutoff points (mmol Fe2+ per day)c | 9.17 | 12.29 | — | ||
| OR (95% CI)d | 1e | 0.88 (0.61–1.29) | 0.63 (0.41–0.99) | 0.048 | |
Abbreviations: CI=confidence interval; OR=odds ratio; FRAP=ferric-reducing antioxidant power; SC=standard deviation; TAC=total antioxidant capacity; TEAC=Trolox equivalent antioxidant capacity; TRAP=trapping antioxidant parameter.
a
Mean and s.d. among controls.
b
On the basis of the control distribution.
c
Computed as the sum of the upper cutoff points of energy-adjusted TAC tertiles plus the means of TAC.
d
Estimates 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.
e
Reference category.