| Variables | β coefficient | 95% CI | p-value |
| Age, y |
|
| 0.014 |
| ≤60 | reference | - | - |
| >60 | 5.98 | 1.20 - 10.76 | 0.014 |
| Educational level |
|
| 0.003 |
| Illiterate | reference | - | - |
| Primary | −6.37 | −11.41 - −1.33 | 0.013 |
| Secondary/University | −11.04 | −18.31 - −3.78 | 0.003 |
| Glaucoma early screening |
|
| 0.002 |
| No | reference | - | - |
| Yes | −11.31 | −18.40 - −4.23 | 0.002 |
| Glaucoma severity stage |
|
| 0.014 |
| Mild/Moderate | reference | - | - |
| Severe | 8.09 | 2.92 - 13.27 | 0.002 |
| Number of eye-drops/day |
|
| 0.011 |
| Two or more drops | reference | - | - |
| One drop | −6.47 | −11.50 - −1.45 | 0.011 |