Clinical characteristics of diabetic nephropathy (DN) cases and diabetic controls.

Unless otherwise stated values are mean ± standard deviation.
aCalculated from the dates of diagnosis and recruitment.
bAverage of the three most recent values prior to recruitment.
cExcludes subjects receiving renal replacement therapy (dialysis or transplant).
P<0.05 for age at diagnosis; P<0.001 for all other comparisons except body mass index.