Table 2 Univariate predictors of amputation
Variable | Amputation | P value | OR | 95% C.I | |
|---|---|---|---|---|---|
Yes n (%) | No n (%) | ||||
Age ≥ 65 years | 29 (37.2) | 49 (62.8) | 0.874 | 1.065 | 0.488–2.325 |
Gender (male) | 67 (36.2) | 118 (63.8) | 0.734 | 1.081 | 0.689–1.695 |
Diabetes type (type 1) | 1 (7.7) | 12 (92.3) | 0.065 | 0.145 | 0.019–1.127 |
Diabetes duration > 10 years | 35 (40.7) | 51 (59.3) | 0.236 | 1.356 | 0.819–2.245 |
Ulcer duration > 1 month | 111 (46.8) | 126 (53.2) | <  0.001 | 10.021 | 4.656–21.567 |
Neuropathy | 93 (35.5) | 169 (64.5) | 0.954 | 1.016 | 0.592–1.744 |
PAD | 87 (49.4) | 89 (50.6) | <  0.001 | 3.910 | 2.402–6.365 |
Ulcer grade (≥ 4) | 94 (52.8) | 84 (47.2) | <  0.001 | 5.953 | 3.544–10.002 |
Wound infection | 99 (38.4) | 159 (61.6) | 0.041 | 1.806 | 1.024–3.183 |
Proteinuria | 54 (44.6) | 67 (55.4) | 0.021 | 1.724 | 1.084–2.741 |
HbA1c < 7% | 3 (17.6) | 14 (82.4) | 0.097 | 0.278 | 0.062–1.259 |
WBC > 10,000/μL) | 78 (44.3) | 98 (55,7) | 0.001 | 2.412 | 1.413–4.118 |
ESR > 20 (mm/hour) | 100 (38.9) | 157 (61.1) | 0.171 | 2.454 | 0.678–8.877 |
Osteomyelitis | 59 (64.8) | 32 (35.2) | <  0.001 | 5.879 | 3.462–9.983 |
Anemia | 71 (39.4) | 109 (60.6) | 0.098 | 1.466 | 0.932–2.305 |
Renal impairment | 29 (43.9) | 37 (56.1) | 0.100 | 1.585 | 0.916–2.743 |