Table 3.
Candidate Variables for Regression Analysis.
| Overall | Clean Surgical Margin (n = 63) | Dirty Surgical Margin (n = 9) | P | |
|---|---|---|---|---|
| HbA1c 3 months prior | 8.6 ± 2.1 | 8.7 ± 2.2 | 7.9 ± 1.9 | .684 |
| HbA1c at admission | 8.8 + 2.0 | 8.9 + 2.0 | 8.4 ± 1.5 | .494 |
| Ulcer surface area, cm2 | 4.3 ± 9.2 | 1.95 ± 2.1 | 15.3 ± 18.7 | .0001* |
| Probe to bone, % | 52 ± 0.5 | 56.5 | 22.2 | .077 |
| Toe pressure (mm Hg) | 134.9 ± 47.8 | 140.4 ± 46.6 | 86 ± 28.7 | .0291* |
| Toe-brachial index | 0.88 ± 0.3 | 0.896 ± 0.3 | 0.742 ± 0.2 | .318 |
| White blood cell count (×1000) | 10.8 + 5.4 | 10.9 + 5.3 | 10.3 + 6.3 | .758 |
| Erythrocyte sedimentation rate | 73.9 ± 33.5 | 73.3 ± 33.7 | 79.5 ± 34.5 | .668 |
| C reactive protein | 10.5 ± 8.8 | 10.7 ± 8.7 | 9 ± 10.8 | .64 |
| Neutrophil: lymphocyte ratio | 7.0 ± 9.4 | 5.73 ± 4.0 | 26.2 ± 40.1 | .469 |
| Mean corpuscular volume | 87.5 ± 6.3 | 86.8 ± 5.9 | 92.4 ± 6.7 | .011* |
| Red cell distribution width | 14.6 ± 3.9 | 14.2 ± 3.5 | 17.1 ± 5.6 | .035* |
| Platelet count (×1000) | 245.2 ± 117.3 | 256.2 ± 115.9 | 170.5 ± 103.5 | .039* |
| Albumin, mg/dL | 3.7 ± 0.5 | 3.8 ± 0.4 | 3.0 ± 0.3 | .0002* |
| Readmission, % | 20.8 ± 0.4 | 17.5 | 44.4 | .083 |
| IDSA classification | 2.35 ± 0.81 | 2.35 ± 0.79 | 2.36 ± 0.89 | .98 |
Abbreviation: IDSA, Infectious Diseases Society of America.
*
Statistically significant (P < .05).