| Amputation | p-value | OR | IC95% [OR] | ||
| Yes | No | ||||
| Duration of diabetes (years) | |||||
| <10 | 9 | 25 | 1 | ||
| 10 - 20 | 30 | 25 | 0.04 | 3.33 | 1.31 - 8.4 |
| 20 - 30 | 1 | 4 | 0.69 | 0.06 - 7 | |
| >30 | 1 | 1 | 2.77 | 0.15 - 49 | |
| Type of lesion | |||||
| Ulceration | 0 | 10 | 1 | ||
| Phlegmon | 5 | 29 | <0.00001 | 2.1 | 0.23 - 5.2 |
| Dry gangrene | 7 | 4 | 3 | 1.5 - 5.97 | |
| Wet gangrene | 5 | 4 | 3.65 | 1.86 - 7.1 | |
| Mixed gangrene | 28 | 9 | 5.63 | 2.95 - 10 | |