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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Ophthalmology. 2010 Jun;117(6):1147–1154. doi: 10.1016/j.ophtha.2010.03.046

Table 2.

Z-test on the differences between Area under the Receiver Operating Characteristics Curve for the ‘EyeCheck’ and ‘Challenge2009’ algorithms and the combined algorithm.

EyeCheck Challenge2009 Combined algorithm
Algorithm 1 0 1.91 2.33
Algorithm 2 0 4.25
Combined algorithm 0

Bold italic characters indicate statistical difference with a 95% confidence level.