Table 2.
Distribution of 3034 breast cancer cases and 3392 controls, odds ratios (OR) and 95% confidence intervals (CI) for the Mediterranean diet score (MDS). Italy and Switzerland, 1991–2008.
| Cases | (%) | Controls | (%) | OR (95% CI) a | |
|---|---|---|---|---|---|
| MDS b | |||||
| 0–3 | 877 | (28.9) | 1022 | (30.2) | 1 c |
| 4–5 | 1323 | (43.6) | 1482 | (43.7) | 0.86 (0.76–0.98) |
| 6–9 | 833 | (27.5) | 886 | (26.1) | 0.82 (0.71–0.95) |
| χ2 trend (p-value) | 7.13 (0.008) | ||||
| 1-point increase | 0.95 (0.92–0.99) |
a Adjusted for study centre, age, education, body mass index, physical activity, smoking, parity, menopausal status, oral contraceptive use, hormone-replacement therapy use, diabetes, family history of breast cancer, non-alcohol energy intake; b The sum does not add up to the total because of 3 missing values on score’s components. c Reference category.