Table 5.
Multivariate linear regression of the baseline predictive factors and its significance on the best corrected visual acuity (logMAR) changes
| Variable | Changes in BCVA (logMAR) | ||
|---|---|---|---|
| Regression coefficient | 95% CI | P | |
| Age | 0.002 | −0.0026-0.007 | 0.34 |
| Place of birth (city) | −0.081 | −0.158-−0.005 | 0.03 |
| Place of residence (city) | −0.002 | −0.075-0.069 | 0.94 |
| Pretreatment | 0.045 | −0.066-0.157 | 0.41 |
| UCVA (logMAR) | |||
| Pretreatment | −0.677 | −0.930-−0.424 | <0.001 |
| BCVA (logMAR) | |||
| Pretreatment K-max (D) | −0.009 | −0.021-0.003 | 0.14 |
| Pretreatment CCT | −0.005 | −0.008-−7.60 | 0.04 |
| Pretreatment thinnest point | 0.003 | −0.0006-0.0082 | 0.09 |
| Pretreatment deviation index | 0.016 | −0.015-0.049 | 0.29 |
| Pretreatment corneal asphericity (Q value) | −0.054 | −0.163-0.055 | 0.32 |
| Pretreatment KI | 0.536 | −0.029-1.02 | 0.04 |
BCVA: Best corrected visual acuity, CI: Confidence interval, UCVA: Uncorrected visual acuity, K-max: Maximum keratometry, CCT: Central corneal thickness, KI: Keratoconus index, logMAR: Logarithm of the minimum angle of resolution