Table 2.
Odds ratios (ORs) of breast cancer and corresponding 95% confidence intervals (CIs) according to dietary inflammatory index (DII) among 2569 cases and 2588 controls. Italy, 1991–1994.
| DII quintiles, OR (95% CI) |
p value for trend |
DII continuousd | |||||
|---|---|---|---|---|---|---|---|
| −6.18, − 2.13 |
−2.12,−1.09 | −1.08,−0.04 | −0.03, 1.28 | 1.28, 5.14 | |||
| Case/Controls | 443/517 | 531/518 | 526/518 | 532/518 | 537/517 | 2569/2588 | |
| Model 1a | 1 b | 1.34 (1.12, 1.60) |
1.33 (1.10,1.60) |
1.36 (1.11, 1.65) |
1.71 (1.36, 1.65) |
<0.0001 | 1.09 (1.04, 1.13) |
| Model 2c | 1 b | 1.33 (1.11, 1.59) |
1.37 (1.13, 1.66) |
1.41 (1.15, 1.73) |
1.75 (1.39, 2.21) |
<0.0001 | 1.09 (1.05, 1.14) |
a
Adjusted for quinquennia of age, study centre, and energy intake.
b
Reference category.
c
Model 2 additionally adjusted for education, body mass index, parity, menopausal status and family history of hormone-related cancers.
d
One unit increase equals 9% increase of its range in the current study (+5.14 to −6.18).