TABLE 3.
Factors Associated With Upgrading GAC
| Characteristic | OR | 95% CI | P |
|---|---|---|---|
| GA classification | |||
| Reference (GA IIIA) | — | — | |
| I/II | 7.91 | 4.68–13.4 | <0.001 |
| IIIB/C | 0.00 | 0.00–0.00 | <0.001 |
| Location of injury | |||
| Reference (tibia) | — | — | |
| Injuries elsewhere | 1.97 | 1.45–2.67 | <0.001 |
| Mechanism of injury | 1.68 | 0.96–2.97 | 0.07 |
| Presence of bone loss | 1.67 | 1.14–2.45 | 0.009 |
| Width of wound (per additional cm) | 1.06 | 1.01–1.12 | 0.02 |
| Length of wound (per additional cm) | 1.08 | 1.05–1.12 | <0.001 |
| Presence of skin loss | 1.75 | 1.15–2.66 | 0.009 |
| Presence of muscle loss | 1.18 | 0.72–1.92 | 0.52 |
| Amount of skin debrided, cm2 | |||
| Reference (no debridement) | — | — | |
| <1 | 1.44 | 0.95–2.17 | 0.08 |
| 1-5 | 2.79 | 1.61–4.84 | <0.001 |
| >5 | 2.19 | 0.61–7.95 | 0.23 |
| Amount of muscle debrided, cm2 | |||
| Reference (no debridement) | — | — | |
| <1 | 1.52 | 1.03–2.23 | 0.03 |
| 1-5 | 2.58 | 1.38–4.81 | 0.003 |
| >5 | 15.1 | 4.08–55.6 | <0.001 |
| Amount of fascia debrided, cm2 | |||
| Reference (no debridement) | — | — | |
| <1 | 1.25 | 0.85–1.84 | 0.25 |
| 1-5 | 0.87 | 0.45–1.69 | 0.69 |
| >5 | 0.03 | 0.00–0.44 | 0.01 |
| Amount of bone debrided, cm2 | |||
| Reference (no debridement) | — | — | |
| <1 | 1.33 | 0.93–1.91 | 0.12 |
| 1-5 | 1.28 | 0.75–2.17 | 0.36 |
| >5 | 3.81 | 1.32–11.0 | 0.01 |