Table 4.
Risk factors for the development of colorectal polyps, Cox regression analysis.
| Variables | Mean (s.d.) or median (IQR) or number(%) | Univariable model | Multivariate modela | ||
|---|---|---|---|---|---|
| HR (95%CI) | P value | HR (95%CI) | P value | ||
| Age (years) | 60.0 (55.0–66.5) | 0.993 (0.970–1.016) | 0.543 | 0.994 (0.969–1.020) | 0.658 |
| Gender (male/female, n) | 338/223 | 1.669 (1.057–2.636) | 0.028 | 0.869 (0.440–1.717) | 0.686 |
| Body mass index, n (%) | |||||
| 18.5~25 | 363 (64.8) | 1 (reference) | 1 | ||
| <18.5 | 14 (2.5) | 0.723 (0.177–2.957) | 0.652 | 1.001 (0.239–4.186) | 0.999 |
| ≥25 | 183 (32.6) | 1.414 (0.959–2.083) | 0.08 | 1.255 (0.841–1.872) | 0.266 |
| Total cholesterol (mmol/L) | 5.13 (0.92) | 0.869 (0.702–1.076) | 0.197 | ||
| Triglycerides (mmol/L) | 1.25 (0.89–1.81) | 0.898 (0.733–1.101) | 0.301 | ||
| Regular smoker (%) | 83 (14.8) | 2.150 (1.420–3.254) | <0.001 | 1.842 (1.139–2.980) | 0.013 |
| Regular drinker (%) | 123 (21.9) | 1.191 (0.780–1.816) | 0.418 | 0.812 (0.508–1.299) | 0.385 |
| White blood cell count (×109/L) | 5.4 (4.6–6.5) | 1.081 (0.965–1.211) | 0.178 | ||
| Red blood cell (×1012) | 4.47 (0.43) | 1.681 (1.062–2.661) | 0.027 | 1.174 (0.516–2.669) | 0.702 |
| Platelet (×109/L) | 205.0 (46.4) | 0.998 (0.994–1.002) | 0.282 | ||
| Hemoglobin (g/L) | 138.0 (128.0–147.0) | 1.022 (1.007–1.038) | 0.005 | 1.018 (0.988–1.048) | 0.244 |
| Plasma viscosity (mpa.s) | 1.37 (1.31–1.41) | 3.185 (0.342–29.692) | 0.309 | ||
| Erythrocyte sedimentation rate (mm/h) | 9.0 (5.0–14.0) | 0.976 (0.945–1.007) | 0.127 | ||
| Albumin (g/L) | 44.59 (2.024) | 0.921 (0.839–1.010) | 0.081 | 0.901 (0.819–0.991) | 0.032 |
| Creatinine (umol/L) | 63.6 (13.9) | 1.015 (1.001–1.028) | 0.03 | 1.009 (0.992–1.027) | 0.277 |
| Uric Acid (umol/L) | 329.2 (84.8) | 1.001 (0.999–1.003) | 0.246 | ||
aAdjusted for age, gender, body mass index, regular smoker, regular drinker, red blood cell count, hemoglobin, plasma viscosity, albumin, creatinine.