Table 3.

Relationship Between Mean Hemoglobin A1c and Skin Intrinsic Fluorescence in the Presence or Absence of Renal Disease

Renal status, presence or absence	R value (Pearson)	P value
History or presence of microalbuminuria
Yes (n=45)	0.53	0.0002
No (n=89)	0.35	0.0010
History or presence of gross proteinuria
Yes (n=35)	0.15	0.39
No (n=134)	0.46	<0.0001
Renal function (eGFR<60 mL/min/1.73 m2)
Yes (n=43)	0.25	0.11
No (n=128)	0.48	<0.0001

Skin intrinsic fluorescence was naturally logarithmically transformed prior to analysis.

eGFR, estimated glomerular filtration rate.