Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 5 Plot demonstrating the significance (p-value) of Student t-test for equivalence as a function of the tolerance limit delta for the total diagnostic error in the DC+ and the DC– rater groups at CR 10:1 and CR 16:1. Solid diamond = DC+ for CR 10:1; solid square = DC+ for CR 16:1; solid triangle = DC– for CR 10:1; x DC– for CR 16:1. The intercepts between these functions and the horizontal reference line (p = 0.05) define the delta that has to be accepted if one wants to consider the error distributions at baseline (CR 1:1) and at CR 10:1 or CR 16:1 as equal with p = 0.05. For results compare Table 9.
|
