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Table 2 Results of evaluation of the value of factors as predictive of outcome

From: Predictive factors for successful limb salvage surgery in diabetic foot patients

Factors Outcome
  Success group Failure group P-value OR 95% CI  
  n (%) Mean (SD) n (%) Mean (SD)    Lower limit Upper limit
Age (years)        0.449 1.13 0.818 1.574
  ≤40   4(3.2%)   0(0%)      
  41-50 23(18.6%)   4(13.3%)      
  51-60 22(17.7%)   3(10.0%)      
  61-70 30(24.2%)   13(43.3%)      
  71-80 38(30.7%)   10(33.3%)      
  >80   7(5.7%)   0(0%)      
  Total   124(100%)   30(100%)      
Sex        0.282    
  Male   81(65.3%)   23(76.7%)      
  Female 43(34.7%)   7(23.3%)      
Smoking       0.802    
  Current or Ex-smoker 25(20.2%)   7(23.3%)      
  Never   99(79.8%)   23(76.7%)      
Hypertension       0.419    
  Yes   61(49.2%)   13(43.3%)      
  No   63(50.8%)   17(56.7%)      
Ischemic heart disease      0.966    
  Yes   8(6.5%)   2(6.7%)      
  No   116(93.5%)   28(93.3%)      
Stroke        0.84    
  Yes   14(11.3%)   3(10.0%)      
  No   110(88.7%)   27(90.0%)      
Chronic renal failure      <0.01    
  Yes   11(8.9%)   11(36.7%)      
  No   113(91.1%)   19(63.3%)      
Premorbid ambulation state      <0.01 1.84 1.26 2.68
  Independent 80(64.5%)   8(26.7%)      
  Walking with aid 19(15.3%)   10(33.3%)      
  Wheel chair 17(13.7%)   7(23.3%)      
  Bedridden 8(6.5%)   5(16.7%)      
Preoperative laboratory finding        
  Hb (g/dl)   10.55 (2.3)   9.42 (1.4) <0.01    
  WBC (/mm3)   10471 (5535)   12475 (5263) <0.01    
  CRP (mg/dl)   6.16 (7.5)   10.62 (5.3) <0.01    
  Creatinine (mg/dl)   1.82 (2.3)   2.82 (2.6) 0.251    
  HbA1C (%)   7.62 (1.9)   7.53 (1.9) 0.11    
Preoperative radiologic findings        
  X-ray         
   Osteomyelitis 18(14.5%)   7(23.3%)   0.24    
   None 106(85.5%)   23(76.7%)      
  CT angiogram*         
   Damaged vessel      <0.01 4.38 2.360 8.151
   Number of damaged vessels††         
   None versus ≥ 1     0.133 2.903 0.619 13.615
   ≤1 versus ≥ 2     <0.01 16.677 4.980 55.846
   ≤2 versus 3     <0.01 21.583 6.483 71.86
   Anterior tibial artery     <0.01 10.405 4.088 26.486
   Patent         
   Stenosis > 50%, Diffuse atheromatosis      
   Occlusion         
   Posterior tibial artery     <0.01 5.062 2.633 9.733
   Patent         
   Stenosis > 50%, Diffuse atheromatosis      
   Occlusion         
   Peroneal artery      <0.01 4.229 2.240 7.984
   Patent         
   Stenosis > 50%, Diffuse atheromatosis      
   Occlusion         
  1. *Statistical analysis was performed by univariate logistic regression analysis.
  2. Comparison of the distribution of the number of damaged vessels between limb salvage success group and failure group.
  3. ††Comparison of the number of damaged vessels between limb salvage success group and failure group.
  4. The number of damaged vessels was defined as those with partial occlusion plus those with total occlusion.
  5. Hb; hemoglobin, WBC; white blood cell, CRP; C-reactive protein, HbA1c; glycosylated hemoglobin, CT; computed tomography.