| Variables | Odds ratio | P value |
| Age (years) | 1.4 (0.8 - 2.5) | 0.271 |
| Hemoglobin (g/dl) | 1.7 (0.6 - 5) | 0.366 |
| Total bilirubin (mg/l) | 2.7 (0.2 - 2.9) | 0.215 |
| Serum albumin (mg/l) | 0.7 (0.6 - .9) | 0.007 |
| Calcium (mmol/l) | 1.7 (0.3 - 11) | 0.563 |
| Urea (mmol/l) | 1.1 (0.8 - 1.5) | 0.512 |
| Creatinine (mmol/l) | 1 (0.9 - 1.03) | 0.015 |
| Blood sugar (mmol/l) | 1.1 (1 - 1.2) | 0.017 |
| RDW (%) | 2.7 (1.2 - 16.1) | 0.016 |