Pattern-Reversal Visual Evoked Potentials Tests in Persons with Type 2 Diabetes Mellitus with and without Diabetic Retinopathy

Table 5

The 60 min and 15 min PRVEP test parameters in group A and group B according to the duration of T2DM (mean ± SD).

Groups according to T2DM duration		60 min PRVEP test		15 min PRVEP test
		P100	P100	P100	P100
		Latency (ms)	Amplitude (μV)	Latency (ms)	Amplitude (μV)
Group A	≤5 yrs N = 26	108.1 ± 3.8	13 ± 4.1 a	121.2 ± 5	14.3 ± 6.2 a
	6–10 yrs N = 38	108 ± 5.1	9.3 ± 4.1 b	121.3 ± 6.5	10 ± 4.4 b
	>10 yrs N = 36	109.7 ± 7.5	9.6 ± 5 b	121.9 ± 5.8	9.5 ± 4.8 b
value		0.383	0.004	0.877	0.001
Group B	≤5 yrs N = 16	119.5 ± 8.2	9.2 ± 3	126.7 ± 3.2	9.3 ± 4.4
	6–10 yrs N = 19	118.4 ± 8.3	8.1 ± 3.6	128.5 ± 2.7	7.1 ± 4.2
	>10 yrs N = 41	116.3 ± 7.8	8 ± 4.5	126.7 ± 4.5	7.3 ± 5.1
value		0.337	0.541	0.225	0.325

value < 0.05 considered statistically significant. Different letters represent significant difference at P value < 0.05).