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Correction
March 2018

Incorrect Data Presentation and Figure Citations

JAMA Surg. 2018;153(3):292. doi:10.1001/jamasurg.2017.5835

In the Original Investigation titled “Forces of Tool-Tissue Interaction to Assess Surgical Skill Level,”1 published online November 15, 2017, the indices defined for comparison of the force data should have been unitless. “Mean force,” “mean LFE rate,” and newtons were deleted in the Abstract; “mean force,” “mean CV,” “mean HFE,” “mean LFE,” “mean FVE,” and newtons were deleted in the Task Performance Evaluation and Force Analysis subsection of the Results section; “mean force,” the “mean” before “HFE,” “LFE,” and “FVE,” and newtons were deleted in the Comparison Among Surgeon Groups subsection of the Results section; the label of Figure 2C was corrected; and the vertical axes labels in Figures 3 and 4 were corrected. In addition, the citation for Figure 2A under the Force Data Analysis subsection of the Methods section should have been for Figure 2A and B and the citation for Figure 2B in the same subsection should have been for Figure 2C. This article has been corrected online.

References
1.
Sugiyama  T, Lama  S, Gan  LS, Maddahi  Y, Zareinia  K, Sutherland  GR.  Forces of tool-tissue interaction to assess surgical skill level  [published online November 15, 2017].  JAMA Surg. doi:10.1001/jamasurg.2017.4516Google Scholar
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