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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Ophthalmology. 2014 Mar 31;121(8):1643–1648. doi: 10.1016/j.ophtha.2014.02.018

Figure 3.

Figure 3

Predicted probabilities of each 6-step grade over the range of 9-step grades. Based on a cumulative logistic regression model for the effect of the continuous 9-step grade on the ordered value of the 6-step grade, adjusted for grader.