Table 1.
Patients' Data, Continuous Variablesa
| Variable | Infected (n = 101) | Noninfected (n = 1847) | p |
|---|---|---|---|
| Age (years) | 64.7 ± 11.6 | 62.9 ± 11.8 | 0.143 |
| BMI (kg/m2) | 32 ± 9 | 30 ± 7 | 0.003b |
| Hospital stay (days) | 6.5 ± 8.3 | 4.1 ± 1.4 | <0.001b |
| Operative time (minutes) | 135.2 ± 69.6 | 108.8 ± 35.5 | <0.001b |
| Preoperative labs | |||
| Creatinine (mg/dl) | 1.0 ± 0.3 | 0.9 ± 0.3 | <0.001b |
| Hemoglobin (g/dl) | 13.4 ± 1.7 | 13.3 ± 1.3 | 0.666 |
| INR | 1.10 ± 0.26 | 1.02 ± 0.20 | 0.002b |
| Platelet count (1000 cells/μl) | 242.5 ± 81.1 | 259.5 ± 63.7 | 0.012b |
| BUN (mg/dl) | 20.3 ± 7.2 | 17.6 ± 6.1 | <0.001b |
| Serum WBC (1000 cells/μl) | 7.5 ± 2.2 | 7.3 ± 2.0 | 0.305 |
| Postoperative Labs | |||
| Creatinine (mg/dl) | 1.1 ± 0.4 | 0.9 ± 0.3 | <0.001b |
| Hemoglobin (g/dl) | 10.2 ± 1.2 | 10.4 ± 1.2 | 0.094 |
| INR | 1.42 ± 0.25 | 1.36 ± 0.21 | 0.006b |
| Platelet count (1000 cells/μl) | 207.3 ± 74.3 | 208.3 ± 56.0 | 0.878 |
| BUN (mg/dl) | 16.8 ± 9.5 | 12.3 ± 5.2 | <0.001b |
| Serum WBC (1000 cells/μl) | 9.8 ± 2.8 | 9.1 ± 2.4 | 0.006b |
a
Data are mean ± standard deviation. WBC, white blood cell count.
b
p < .05.