borderline significanceP < 0.1
62 Multivariable linear regression analyses were performed with backward stepwise elimination, removing nonsignificant covariables from the regression model in a stepwise manner until all remaining variables were P < 0.1 to allow transparency of β values with borderline significance (0.05 ≤ P < 0.1). 65 Dichotomous values, that is, females and males, AMD status, and normal eye status, were encoded as 1 and 0, respectively.