Multivariable analysis of IMD score with R3 retinopathy
Age and ethnicity were excluded from our multivariable analysis because they were not significant when HbA1c was adjusted for in a forward stepwise logistic regression analysis (age; P=0.903, ethnicity; P=0.109).
Forward stepwise multivariable analysis of R3 retinopathy with IMD score and HbA1c showed that the IMD score was significant after adjusting for HbA1c (P=0.016) (Table 1).