Key messages
retinopathy, diabetic foot, nephropathy, Diabetes
RETINOPATHY, DIABETIC FOOT, NEPHROPATHY, DIABETES

• Data on microvascular in the Swedish National Diabetes Register (NDR) display good agreement with data from electronic health records• The ascertainment of the NDR was particularly good for retinopathy and nephropathy• Within nephropathy, there was 98.9% concordance for eGFR and 95.1% for albuminuria• For diabetic foot problems, the concordance was lower but acceptable• The NDR is suitable for use in register-based clinical trials