Table 1.
Characteristics of study participants with and without colorectal polyps.
| Variables | With colorectal polyps | Without colorectal polyps | t value | P value |
|---|---|---|---|---|
| n (male/female) | 449 (359/90) | 1184 (764/420) | 36.081a | <0.001 |
| Age (years) | 52.1 (8.7) | 49.1 (9.4) | 5.925 | <0.001 |
| Waist circumference (cm) | 89.1 (9.1) | 85.5 (9.2) | 6.993 | <0.001 |
| Body mass index (kg/m2) | 25.09 (3.18) | 24.18 (3.18) | 5.157 | <0.001 |
| Systolic blood pressure (mmHg) | 130.4 (16.7) | 126.9 (17.7) | 3.639 | <0.001 |
| Diastolic blood pressure (mmHg) | 79.5 (10.8) | 77.1 (11.8) | 3.711 | <0.001 |
| Alanine aminotransferase (U/L) | 22.0 (16.0–30.0) | 19.0 (14.0–28.0) | 4.171b | <0.001 |
| Aspartate aminotransferase (U/L) | 21.0 (18.0–25.0) | 20.0 (17.0–25.0) | 2.641b | 0.008 |
| γ-Glutamyltransferase (U/L) | 32.0 (21.0–54.0) | 25.0 (16.0–44.0) | 5.647b | <0.001 |
| Triglyceride (mmol/L) | 1.64 (1.16–2.43) | 1.42 (0.99–2.11) | 4.825b | <0.001 |
| Total cholesterol (mmol/L) | 4.78 (4.25–5.43) | 4.61 (4.08–5.24) | 3.376b | 0.001 |
| HDL cholesterol (mmol/L) | 1.13 (0.93–1.33) | 1.20 (1.00–1.44) | 4.058b | <0.001 |
| LDL cholesterol (mmol/L) | 2.75 (2.27–3.30) | 2.61 (2.17–3.14) | 3.169b | 0.002 |
| Fasting plasma glucose (mmol/L) | 4.85 (4.50–5.35) | 4.78 (4.41–5.19) | 2.975b | 0.003 |
| Serum uric acid (μmol/L) | 366.3 (85.4) | 343.1 (88.1) | 4.779 | <0.001 |
| Carcinoembryonic antigen (μg/L) | 2.00 (1.50–2.90) | 1.80 (1.30–2.60) | 5.001b | <0.001 |
| Hemoglobin (g/L) | 151.9 (14.7) | 145.9 (16.4) | 6.795 | <0.001 |
Data are expressed as the mean (SD) or median (IQR). aχ2 value. bZ value. HDL: high-density lipoprotein; LDL: low-density lipoprotein.