Table 2.
Participants’ characteristics across quartiles of energy-adjusted dietary inflammatory index (E-DII) among 2492 controls. Italy, 1992–2009.
| Characteristics | E-DII quartiles | ||||
|---|---|---|---|---|---|
| −5.29, −1.19 | −1.18, −0.31 | −0.30, 0.73 | 0.74, 7.66 | P-valuea | |
| N (%) | N (%) | N (%) | N (%) | ||
| Age (years) | 0.12 | ||||
| <50 | 133 (21.4) | 137 (22.0) | 144 (23.1) | 169 (27.1) | |
| 50–59 | 183 (29.4) | 203 (32.6) | 174 (27.9) | 174 (27.9) | |
| 60–69 | 230 (36.9) | 205 (32.9) | 211 (33.9) | 191 (30.7) | |
| >69 | 77 (12.4) | 78 (12.5) | 94 (15.1) | 89 (14.3) | |
| Sex | <0.001 | ||||
| Men | 303 (48.6) | 395 (63.4) | 402 (64.5) | 397 (63.7) | |
| Women | 320 (51.4) | 228 (36.6) | 221 (35.5) | 226 (36.3) | |
| Education (years)b | 0.52 | ||||
| <7 | 306 (49.5) | 312 (50.2) | 331 (53.4) | 323 (52.0) | |
| 7–11 | 186 (30.1) | 190 (30.6) | 182 (29.4) | 168 (27.1) | |
| ≥12 | 126 (20.4) | 120 (19.3) | 107 (17.3) | 130 (20.9) | |
| Smoking b | <0.0001 | ||||
| Non-smoker | 320 (51.5) | 256 (41.1) | 257 (41.4) | 244 (39.2) | |
| Ex-smoker | 183 (29.5) | 198 (31.8) | 193 (31.1) | 187 (30.1) | |
| Current smoker | |||||
| <15 cigarettes/day | 60 (9.7) | 68 (10.9) | 83 (13.4) | 69 (11.1) | |
| 15–24 cigarettes/day | 49 (7.9) | 80 (12.8) | 64 (10.3) | 90 (14.5) | |
| ≥25 cigarettes/day | 9 (1.5) | 21 (3.4) | 24 (3.9) | 32 (5.1) | |
| Alcohol intake (drinks/week)b | <0.0001 | ||||
| <14 | 323 (51.9) | 276 (44.3) | 291 (46.7) | 319 (51.2) | |
| 14–<28 | 187 (30.0) | 184 (29.5) | 156 (25.0) | 126 (20.2) | |
| 28–<56 | 87 (14.0) | 118 (18.9) | 122 (19.6) | 121 (19.4) | |
| ≥56 | 26 (4.2) | 45 (7.2) | 54 (8.7) | 57 (9.2) | |
a
p value for Chi-square test
b
The sum does not add up to the total because of some missing values