Table 4.
Univariate and Multivariate Regression Analyses for Superficial and Deep Blood Vessel Tortuosity
| Univariate Regression | Stepwise Multivariate Regression | |||
|---|---|---|---|---|
| Characteristics | Coefficient (95% CI) | P | Coefficient (95% CI) | P |
| Superficial capillary plexus | ||||
| Female sex | 0.067 (−0.130, 0.266) | 0.503 | — | — |
| Mean age (yr) | −0.004 (−0.011, 0.002) | 0.219 | — | — |
| BCVA (logMAR) | 0.074 (−2.999, 3.147) | 0.962 | — | — |
| IOP (mm Hg) | −0.064 (−0.101, −0.026) | 0.001 | −0.044 (−0.079, −0.009) | 0.012 |
| ACD (mm) | 0.351 (0.179, 0.524) | 0.001 | — | — |
| Lens thickness (mm) | 0.887 (0.027, 1.74) | 0.053 | — | — |
| AL (mm) | 0.273 (0.195, 0.351) | <0.001 | 0.097 (0.014, 0.181) | 0.022 |
| GCIPL thickness (µm) | 0.079 (−0.005, 0.002) | 0.067 | — | — |
| pRNFL thickness (µm) | 0.013 (0.018, 0.091) | 0.005 | — | — |
| Image quality index | −0.147 (−0.162, −0.132) | <0.001 | — | — |
| Deep capillary plexus | ||||
| Female sex | 0.005 (−0.017, 0.028) | 0.641 | — | — |
| Mean age (yr) | 0.001 (0.0005, 0.002) | 0.001 | — | — |
| BCVA (logMAR) | 0.499 (0.118, 0.880) | 0.010 | — | — |
| IOP (mm Hg) | −0.005 (−0.010, −0.001) | 0.010 | −0.004 (−0.009, −0.0005) | 0.028 |
| ACD (mm) | −0.005 (−0.025, 0.014) | 0.594 | — | — |
| Lens thickness (mm) | 0.044 (0.021, 0.068) | <0.001 | 0.036 (0.003, 0.060) | 0.028 |
| AL (mm) | −0.001 (−0.010, 0.007) | 0.808 | — | — |
| GCIPL thickness (µm) | −0.001 (−0.004, 0.0005) | 0.124 | — | — |
| pRNFL thickness (µm) | 0.0001 (−0.0009, 0.001) | 0.812 | — | — |
| Image quality index | −0.010 (−0.012, −0.009) | <0.001 | — | — |
The age, sex, and image quality index were adjusted and analyzed in the multivariate model. Bold values indicate statistical significance.