Table 1. Results of the non-linear equation estimate expressing the separation curves among the OCT Glaucoma Staging System stages for the age range of 60–69 years (asymptotic standard errors in brackets).
| Separation curves among stages | α | β | γ | RMSE / SCTS |
|---|---|---|---|---|
| From stage 0 to borderline | 9.60 (1.80) | 0.04 (0.01) | 701.38 (105.35) | 25.42/2479.20 |
| From borderline to stage 1 | 7.22 (1.32) | 0.03 (0.01) | 572.10 (72.62) | 46.75/4961.71 |
| From stage 1 to stage 2 | 5.64 (0.93) | 0.02 (0.00) | 411.94 (48.68) | 62.43/7664.93 |
| From stage 2 to stage 3 | 4.56 (0.69) | 0.02 (0.00) | 330.17 (33.75) | 86.86/11944.62 |
| From stage 3 to stage 4 | 3.87 (0.54) | 0.02 (0.00) | 270.96 (24.28) | 112.00/17769.27 |
| From stage 4 to stage 5 | 3.48 (042) | 0.02 (0.00) | 229.31 (17.70) | 140.10/26069.93 |
Abbreviations: RMSE, root mean square error; SCTS, sum of the corrected total squares.