Fig. 3

Original operation time measurements (top image) and CUSUM of operational time measurements (bottom image) for all cases (surgeries) in the PEID and UBE groups, along with the fitted curves and calculated stability points
Original operation time measurements (top image) and CUSUM of operational time measurements (bottom image) for all cases (surgeries) in the PEID and UBE groups, along with the fitted curves and calculated stability points