Table 4 Results of simple and multiple regression models based on best corrected visual acuity outcome
Parameters | Simple regression model | Multiple regression model | ||||||
|---|---|---|---|---|---|---|---|---|
Coefficient | Standard error | 95% CI | P value | Coefficient | Standard error | 95% CI | P value | |
Age | 0.003 | 0.001 | 0.001 to 0.005 |  < 0.001 | 0.002 | 0.001 | 0.001 to 0.004 | 0.009 |
DM duration | 0.004 | 0.002 | 0.001 to 0.007 | 0.011 | – | – | – | – |
ETDRS level | 0.002 | 0.001 |  − 0.0003 to 0.004 | 0.087 | – | – | – | – |
Eye | 0.007 | 0.017 |  − 0.027 to 0.041 | 0.686 | – | – | – | – |
VD SRCP |  − 3.906 | 1.993 |  − 7.813 to 0.001 | 0.050 | – | – | – | – |
VD DRCP |  − 7.258 | 2.344 |  − 11.852 to − 2.663 | 0.002 |  − 6.194 | 2.605 |  − 11.298 to − 1.089 | 0.017 |
FAZ area | 0.448 | 0.195 | 0.065 to 0.830 | 0.022 | – | – | – | – |
RNFL thickness |  − 0.005 | 0.003 |  − 0.012 to 0.001 | 0.120 | – | – | – | – |
GCL-IPL thickness |  − 0.007 | 0.002 |  − 0.010 to − 0.004 |  < 0.001 |  − 0.004 | 0.002 |  − 0.007 to − 0.001 | 0.044 |
INL thickness |  − 0.0005 | 0.003 |  − 0.006 to 0.005 | 0.856 | – | – | – | – |
OPL thickness |  − 0.001 | 0.005 |  − 0.010 to 0.009 | 0.912 | – | – | – | – |
Total thickness |  − 0.002 | 0.001 |  − 0.004 to 0.0002 | 0.079 | – | – | – | – |
Constant | NA | NA | NA | NA | 0.575 | 0.196 | 0.191 to 0.959 | 0.003 |