Invisible Color Variations of Facial Erythema: A Novel Early Marker for Diabetic Complications?

Table 2

Comparison of standard deviations (SD) of invisible facial redness (IFR) in diabetic patients and nondiabetic controls, where ch_min is the least reddish check of each subject and ch_max is the most reddish check of each subject. Rep = repetition; Seg = segment of the video.

Rep	Seg	Standard deviations				Comparisons
		Control subjects (C)		Diabetic patients (DM)		vs.	vs.	vs.	vs.
						value	value	value	value
R1	A	2.44	2.05	3.66	3.87	0.001	0.027	0.001	0.018
	B	2.71	2.45	3.62	3.59	0.090	0.124	0.053	0.185
	C	2.24	1.89	4.09	3.67	0.003	0.016	0.004	0.019
R2	A	2.51	2.38	3.95	3.93	0.037	0.027	0.026	0.041
	B	2.52	2.11	3.74	3.44	0.021	0.021	0.003	0.105
	C	2.44	1.92	4.34	3.63	0.002	0.025	0.005	0.037