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Table 2 Surgeon Demographics for Complication Rate above Mean

From: Which surgeon demographic factors influence postoperative complication rates after total knee arthroplasty at U.S. News and World Report top-ranked orthopedic hospitals?

Variable Complication Rate P Valuea
 ≤ 2.2%  > 2.2%  
n % n %  
Number of Surgeons 365   295   
Hospital Region
  East 127 34.8 92 31.2 0.607
  Midwest 105 28.8 93 31.5  
  South 63 17.3 46 15.6  
  West 70 19.2 64 21.7  
Teaching Hospital
  Yes 365 100.0 295 100.0 -
  No 0 0.0 0 0.0  
Gender
  Female 6 1.6 5 1.7 0.959
  Male 359 98.4 290 98.3  
Physician Type
  MD 359 98.4 284 96.3 0.093
  DO 6 1.6 11 3.7  
Age Cohorts (Years)
  ≤ 42 81 22.2 76 25.8 0.263
  43–50 106 29.0 66 22.4  
  51–57 86 23.6 73 24.7  
  ≥ 58 92 25.2 80 27.1  
Surgeon Volume (Cases)
  ≤ 50 80 21.9 83 28.1  < 0.001
  51–100 77 21.1 90 30.5  
  101–229 95 26.0 70 23.7  
  230 +  113 31.0 52 17.6  
Residency Reputation
  Top 10 95 26.0 65 22.0 0.234
  > 10 270 74.0 230 78.0  
Fellowship Trained
  No 150 41.1 138 46.8 0.143
  Yes 215 58.9 157 53.2  
Years in Practice Cohorts
  ≤ 10 86 23.6 80 27.1 0.094
  11–20 129 35.3 81 27.5  
  21 +  150 41.1 134 45.4  
  1. aPearson Chi Square Test