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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: JAMA Otolaryngol Head Neck Surg. 2017 Jun 1;143(6):542–548. doi: 10.1001/jamaoto.2016.4132

Figure 1. Positive Final Margin Cumulative Sum Learning Curve, Stratified by Surgeon.

Figure 1

A-C, Surgeons A, B, and C. The horizontal reference at 0 denotes the individual final average. The y-axis denotes cumulative sum of the expected failure proportion from the series mean at each time point. The x-axis denotes consecutive cases. The blue vertical line indicates the inflection point. The dashes along the x-axis indicate positive margin cases.