Table 6.
Glaucoma Symptom Scale (GSS) questionnaire scores and stage of visual field damage: statistical analysis (per-eye analysis).
| Func-4 | Symp-6 | Total score | ||||
|---|---|---|---|---|---|---|
| β (Stderr) | p-value | β (Stderr) | p-value | β (Stderr) | p-value | |
| Intercept | 66.96 (2.81) | <0.001 | 65.5 (2.63) | <0.001 | 66.01 (2.34) | <0.001 |
| Borderline* | −0.17 (1) | 0.869 | −0.82 (1) | 0.410 | −0.56 (0.85) | 0.511 |
| Stage 1* | −1.97 (1.05) | 0.061 | −1.53 (1.04) | 0.142 | −1.71 (0.89) | 0.054 |
| Stage 2* | −3.42 (1.07) | 0.001 | −2.89 (1.06) | 0.006 | −3.11 (0.9) | <0.001 |
| Stage 3* | −5.48 (1.1) | <0.001 | −4.18 (1.09) | <0.001 | −4.72 (0.93) | <0.001 |
| Stage 4* | −5.97 (1.12) | <0.001 | −4.12 (1.11) | <0.001 | −4.93 (0.95) | <0.001 |
| Stage 5* | −8.36 (1.15) | <0.001 | −5.2 (1.14) | <0.001 | −6.5 (0.97) | <0.001 |
| Age | 0.03 (0.04) | 0.422 | 0.07 (0.03) | 0.025 | 0.06 (0.03) | 0.060 |
| BCVA | 6.46 (0.81) | <0.001 | 2.77 (0.79) | <0.001 | 4.24 (0.68) | <0.001 |
| Previous treatment | −3.5 (1.56) | 0.025 | −1.28 (1.45) | 0.377 | −2.07 (1.29) | 0.110 |
BCVA, best corrected visual acuity; β, beta coefficient; SE, standard error for beta coefficient; p-value for multivariate mixed model including visual field stage groups, BCVA, age, previous treatment (treated versus untreated); *, p-values for borderline, stage1, stage 2, stage 3, stage 4, stage 5 groups refer to the comparison between each stage group and stage 0.