Clinical study of different prediction models in predicting diabetic nephropathy in patients with type 2 diabetes mellitus

Table 2 Variable assignment

Factors	Variables of interest	Assignment of value
Concurrent DN or not	Y	Yes = 1, No = 0
Duration of diabetes (yr)	× 1	Numerical value
FBG (mmol/L)	× 2	Numerical value
Scr (μmol/L)	× 3	Numerical value
HbAlc (%)	× 4	Numerical value
BUN (mmol/L)	× 5	Numerical value
DR	× 6	Yes = 1, No = 0

FBG: Fasting blood glucose; Scr: Serum creatinine; HbAlc: Glycosylated hemoglobin; BUN: Blood urea nitrogen; DR: Diabetic retinopathy.