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Table 1 Estimated Probability (%) of Outcomes Utilized in Cost-Effectiveness Model

From: Cost-effectiveness of external cephalic version for term breech presentation

  Base Case Probability (Range) References
Successful ECV Procedure    
   First Trial 58% (35-86%) [18]
   Second Trial* 51% (17-71%) [2224]
Consequence of ECV    
   Fetus remains Vertex - -  
Cephalic Delivery with Successful ECV - -  
Cesarean After Successful ECV 27.60% (8.5-30%) [7, 43, 44]
   Fetus Spontaneously Reverts to Breech * 6% (3-10%) [19, 4547]
Emergency Cesarean Needed at time of ECV 0.35% (0-1%) [21, 48]
Adverse Outcome from Emergency Cesarean 1% (0-1%)  
  1. * Likelihood used in model base case is the weighted average of studies reviewed where the numerator and denominator across multiple studies were summed.
  2. Ranges of 0-1% were included in the sensitivity analysis even though no literature referenced these ranges in order to see the effect of both rare but expensive adverse events.