Correlation between Optic Nerve Parameters Obtained Using 3D Nonmydriatic Retinal Camera and Optical Coherence Tomography: Interobserver Agreement on the Disc Damage Likelihood Scale
Figure 1
(a) The weighted kappa values for interobserver agreement on the disc damage likelihood scale (DDLS) for the 12 pairs (glaucoma specialist versus all residents). All possible pairs are plotted on the X-axis and the weighted kappa values are shown on the Y- axis. White circles indicate the weighted kappa values before the training program and black circles indicate the weighted kappa values after attending the training program. The residents were divided according to level of training: junior (PGY 1 or 2) and senior (PGY 3 or 4) as indicated by the red line. The weighted kappa values increased after the training program, and this positive effect was greater among junior residents. (b) Concordance among residents on the DDLS evaluation before (white circles) and after (black circles) the training program. Note the right shift (toward better concordance among the residents) after the training program. (c) Concordance among residents according to DDLS stage. Note that the concordance is lowest for stages 5 and 6, whereas it is good for stages 0–4.
