Table 1.
Characteristics of the study subjects.
| Variables | Controls (%) | Cases (%) | |||||
|---|---|---|---|---|---|---|---|
| Total | By Anatomical Subtypes | By Histological Subtypes | |||||
| (n = 2 700) | (n = 329) | Cardia (n = 84) | Non-Cardia (n = 238) | Intestinal (n = 122) | Diffuse (n = 75) | ||
| Age mean ± SD | 63.53 ± 0.21 | 65.40 ± 0.68 | 63.37 ± 1.26 | 66.06 ± 0.82 | 69.49 ± 0.96 | 61.79 (1.56) | |
| Gender (men, %) | 56.2 | 72.6 | 91.6 | 65.5 | 70.4 | 60.0 | |
| Socioeconomic status | High (%) | 448 (16.59) | 27 (8.21) | 9 (10.71) | 18 (7.56) | 8 (6.56) | 8 (10,67) |
| Medium (%) | 1 361 (50.41) | 146 (44.38) | 38 (45.24) | 103 (43.28) | 49 (40.16) | 34 (45.33) | |
| Low (%) | 891 (33.00) | 156 (47.42) | 37 (44.05) | 117(49.16) | 65 (53.28) | 33 (44.00) | |
| Smoking status (%) | yes | 1 531 (56.70) | 201 (61.09) | 65 (77.38) | 130 (54.62) | 60 (49.18) | 45 (60.00) |
| no | 1 169 (43.30) | 128 (38.91) | 19 (22.62) | 108 (45.38) | 62 (50.82) | 30 (40.00) | |
| GC family history (%) | yes | 170 (6.30) | 53 (16.11) | 11 (13.0) | 40 (16.81) | 27 (22.13) | 13 (17.33) |
| no | 2 530 (93.70) | 276 (83.89) | 73 (86.90) | 198 (83.19) | 95 (77.87) | 62 (82.67) | |
| Physical activity (METS*h/week) | <8 | 1 374 (50.89) | 201 (61.09) | 50 (59.52) | 147 (61.76) | 66 (54.10) | 48 (64.00) |
| ≥8 | 1 326 (49.11) | 128 (38.91) | 34 (40.48) | 91 (38.24) | 56 (45.90) | 27 (36.00) | |
| Body mass index (kg/m2) | ≤25 | 1 026 (38.00) | 103 (31.31) | 21 (25) | 80 (33.61) | 41 (33.61) | 32 (42.67) |
| >25–30 | 1 129 (41.81) | 150 (45.59) | 37 (44.05) | 110 (46.22) | 59 (48.36) | 31 (41.33) | |
| ≥30 | 545 (20.19) | 76 (23.10) | 26 (30.95) | 48 (20.17) | 22 (18.03) | 12 (16.00) | |
| Alcohol consumption (g/day) | 0 | 418 (15.48) | 47 (14.29) | 8 (9.52) | 39 (16.39) | 22 (18.03) | 13 (17.33) |
| <12 | 1 179 (43.67) | 103 (31.31) | 16 (19.05) | 84 (35.29) | 40 (32.79) | 27 (36.00) | |
| 12–47 | 787 (29.15) | 101 (30.70) | 34 (40.48) | 66 (27.73) | 30 (24.59) | 22 (29.33) | |
| >47 | 316 (11.70) | 78 (23.71) | 26 (30.95) | 49 (20.59) | 30 (24.59) | 13 (17.33) | |
| Vegetables total intake (g/day), mean ± SD | 191.32 ± 2.42 | 180.80 ± 6.95 | 184.76 ± 18.32 | 177.88 ± 7.04 | 189.25 ± 9.7 | 185.63 ± 13.87 | |
| Red meat intake (g/day), mean ± SD | 64.02 (0.76) | 84.35 (2.94) | 97.50 (6.54) | 80.10 (3.28) | 84.63 (4.58) | 73.12 (5.19) | |
| Sodium intake (mg/day), mean ± SD | 3 008.64 (24.04) | 3 529.30 (86.26) | 3 758.56 (200.71) | 3443.85 (94.85) | 3 403.23 (144.63) | 3 821.43 (187.65) | |
| Total flavonoid intake (mg/day), mean ± SD | 371.25 (3.72) | 358.48 (9.88) | 371.15 (18.63) | 351.18 (11.69) | 367.16 (14.72) | 362.48 (24.51) | |