Table 1.
Baseline characteristics of the subjects according to age n (%)
| Variable |
Age group |
P value | |||
| < 40 (n = 694) | 40-44 (n = 591) | 45-49 (n = 491) | ≥ 50 (n = 1043) | ||
| Males | 465 (67.0) | 443 (75.0) | 363 (73.9) | 717 (68.7) | 0.790 |
| Body mass index (kg/m2) | 23.1 ± 3.3 | 23.8 ± 3.3 | 24.0 ± 3.0 | 24.0 ± 3.0 | < 0.001 |
| Waist circumference (cm) | 81.5 ± 10.3 | 82.9 ± 9.5 | 83.7 ± 8.8 | 84.1 ± 8.7 | < 0.001 |
| Diabetes mellitus | 17 (2.4) | 21 (3.6) | 33 (6.7) | 130 (12.5) | < 0.001 |
| Hypertension | 89 (12.8) | 146 (24.7) | 155 (31.6) | 462 (44.3) | < 0.001 |
| Metabolic syndrome | 48 (6.9) | 67 (11.3) | 77 (15.7) | 226 (21.7) | < 0.001 |
| High hsCRP | 54 (7.8) | 55 (9.3) | 41 (8.4) | 131 (12.6) | 0.001 |
| Triglyceride (mg/dL) | 116.0 ± 91.2 | 125.4 ± 85.3 | 130.2 ± 90.2 | 123.8 ± 83.6 | 0.039 |
| HDL cholesterol (mg/dL) | 58.7 ± 15.1 | 57.5 ± 14.7 | 56.3 ± 14.6 | 56.7 ± 15.1 | 0.018 |
| LDL cholesterol (mg/dL) | 132.0 ± 50.3 | 136.6 ± 34.1 | 139.5 ± 36.8 | 137.4 ± 35.1 | 0.006 |
| Total cholesterol (mg/dL) | 202.1 ± 37.5 | 208.0 ± 36.0 | 210.8 ± 41.6 | 208.2 ± 39.4 | 0.001 |
| Alcohol consumption | 272 (39.2) | 263 (44.5) | 235 (47.9) | 348 (33.4) | 0.005 |
| Smoking status | |||||
| Never | 312 (45.0) | 212 (35.9) | 181 (36.9) | 449 (43.0) | < 0.001 |
| Former | 134 (19.3) | 136 (23.0) | 131 (26.7) | 366 (35.1) | |
| Current | 248 (35.7) | 243 (41.1) | 179 (36.5) | 228 (21.9) | |
| Colorectal adenoma | 61 (8.8) | 87 (14.7) | 105 (21.4) | 302 (29.0) | < 0.001 |
| Advanced neoplasm | 6 (0.9) | 4 (0.7) | 6 (1.2) | 26 (2.5) | 0.004 |
| ≥ 1 cm | 5 (0.7) | 3 (0.5) | 5 (1.0) | 24 (2.3) | 0.001 |
| Villous | 1 (0.1) | 1 (0.2) | 1 (0.2) | 7 (0.7) | 0.055 |
| High grade | 0 (0.0) | 1 (0.2) | 1 (0.2) | 4 (0.4) | 0.091 |
| Multiplicity | 8 (1.2) | 18 (3.0) | 33 (6.7) | 121 (11.6) | < 0.001 |
hsCRP: High-sensitivity C-reactive protein; HDL: High-density lipoprotein cholesterol; LDL: Low-density lipoprotein cholesterol.