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Table 3 Surgeon Demographics for Elevated Complication Rate (> 1 STD 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
 < 2.7%  ≥ 2.7%  
n % n %  
Number of Surgeons 554   106   
Hospital Region
  East 182 32.9 37 34.9 0.696
  Midwest 164 29.6 34 32.1  
  South 91 16.4 18 17.0  
  West 117 21.1 17 16.0  
Teaching Hospital
  Yes 554 100.0 106 100.0 -
  No 0 0.0 0 0.0  
Gender
  Female 10 1.8 1 0.9 0.704
  Male 544 98.2 105 99.1  
Physician Type
  MD 541 97.7 102 96.2 0.498
  DO 13 2.3 4 3.8  
Age Cohorts (Years)
  ≤ 42 129 23.3 28 26.4 0.031
  43–50 156 28.2 16 15.1  
  51–57 126 22.7 33 31.1  
  ≥ 58 143 25.8 29 27.4  
Surgeon Volume (Cases)
  ≤ 50 138 24.9 25 23.6 0.234
  51–100 133 24.0 34 32.1  
  101–229 138 24.9 27 25.5  
  230 +  145 26.2 20 18.9  
Residency Reputation
  Top 10 136 24.5 24 22.6 0.675
  > 10 418 75.5 82 77.4  
Fellowship Trained
  No 239 43.1 49 46.2 0.557
  Yes 315 56.9 57 53.8  
Years in Practice Cohorts
  ≤ 10 137 24.7 29 27.4 0.135
  11–20 185 33.4 25 23.6  
  21 +  232 41.9 52 49.1  
  1. aPearson Chi Square Test