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Table 4 Results of univariate analysis of the surgery-related parameters

From: Risk factors for surgical site infection after malignant bone tumor resection and reconstruction

Factor   Number (%) of tumors with deep infection OR 95% CI p value
Surgical procedure F 2/62 (3.2%)
  P 3/85 (3.5%) 1.097 0.121–1.097 1
B 20/108 (18.5%) 6.761 1.548–61.860 0.004
B + P 8/47 (17.0%) 6.056 1.127–61.514 0.019
Iodine-coated implant Yes 4/66 (6.1%) 0.461 0.114–1.388 0.184
  No 29/236 (12.3%)    
Operative time ≥5 h 26/121 (21.5%) 6.759 2.728–19.148 <  0.001
  < 5 h 7/181 (3.9%)  
Additional surgery Yes 12/53 (22.6%) 3.162 1.312–7.356 0.006
  No 21/249 (8.4%)  
  1. F, fixation only; P, prosthetic replacement; B, biological reconstruction without prosthetic replacement; B + P, biological reconstruction with prosthetic replacement; OR, odds ratio; CI, confidence interval
  2. The p values were calculated with Fisher exact test