Table 1.
Clinical and laboratory parameters of patients with Clostridium difficile infection and controls
| CDI cases (n = 247) | Controls (n = 732) | P value | |
| Age (yr) | 72.4 (14.2) | 70.6 (13.8) | NS |
| Male/female | 90/157 | 276/455 | NS |
| Charlson Index | 5.6 (3.1) | 4.8 (3.0) | < 0.001 |
| Age-adjusted Charlson Comorbidity Index | 6.8 (2.7) | 5.9 (2.7) | < 0.001 |
| CRP (mg/L) | 108.3 (101.3) | 49.8 (74.0) | < 0.001 |
| Procalcitonin (mg/L) | 1.8 (8.1) | 1.2 (12.4) | NS |
| WBC count (G/L) | 14.3 (20.9) | 9.9 (8.4) | < 0.001 |
| Albumin (g/L) | 29.5 (9.9) | 36.2 (11.2) | < 0.001 |
| Creatinine (μmol/l) | 158.3 (158.2) | 124.1 (117.7) | < 0.001 |
| Na (mmol/L) | 137.7 (14.7) | 136.1 (25.1) | NS |
| K (mmol/L) | 4.1 (4.4) | 4.4 (4.8) | NS |
Data are expressed as mean ± SD. CDI: Clostridium difficile infection; CRP: C reactive protein; NS: Not significant; WBC: White blood cell count.