Mild myopia
Model 1Model 2Model 3
−2.99 to ≤−1D (n=554)−2.99 to ≤−0.75D (n=723)−2.99 to ≤−0.50D (n=932)
Emmetropia>−1D to <+1D (n=1005)>−0.75D to <+1D (n=836)>−0.5D to <+1D (n=627)
Relative risk ratioRelative risk ratioRelative risk ratio
UnadjAdjusted95% CIUnadjAdjusted95% CIUnadjAdjusted95% CI
Highest educational attainment
 <O levels111111
 O levels1.241.190.90 to 1.580.970.930.72 to 1.190.850.810.63 to 1.04
 A levels1.621.571.16 to 2.131.331.270.96 to 1.691.361.280.95 to 1.71
 Higher education1.681.571.18 to 2.081.451.321.02 to 1.721.321.180.91 to 1.54
Socioeconomic status
 Manual11111
 Non-manual1.391.240.97 to 1.581.421.311.04 to 1.651.461.381.10 to 1.74