Concurrent Learning Curves of 3-Dimensional and Robotic-Assisted Laparoscopic Radical Hysterectomy for Early-Stage Cervical Cancer Using 2-Dimensional Laparoscopic Radical Hysterectomy as a Benchmark: A Single Surgeon's Experience.

As expected, there was no effect for 2D-LRH ( Figure 2B ), the effect was barely significant for 3D-LRH ( R 2 =0.07, P =0.012; Figure 2C ), and most prominent effect was for RA-LRH ( R 2 =0.25, P =1.2×10 −7 ; Figure 2D ), especially for RA-LRH as seen by higher (negative) correlation coefficient (−0.50 versus −0.27) and steeper regression line ( Figure 2C, 2D ).

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