Early detection of peripheral neuropathy in patients with diabetes mellitus type 2

Table 2 Motor nerve conduction studies of the upper and lower limbs in the studied groups

Nerve	Group	Mean ± SD	F	p
Median motor DL (ms)	Group 1	4.61 ± 1.82	0.228	0.797	P1	0.715
	Group 2	4.77 ± 1.19			P2	0.502
	Group 3	4.90 ± 1.03			P3	0.759
Median motor CMAP amplitude (mV)	Group 1	7.02 ± 1.47	84.248	0.001*	P1	0.001*
	Group 2	4.30 ± 1.31			P2	0.001*
	Group 3	2.21 ± 0.52			P3	0.001*
Median motor CV (m/s)	Group 1	46.85 ± 4.87	16.338	0.001*	P1	0.008*
	Group 2	41.56 ± 2.51			P2	0.001*
	Group 3	39.18 ± 5.16			P3	0.024*
Ulnar motor DL (ms)	Group 1	4.07 ± 0.55	0.647	0.527	P1	0.696
	Group 2	4.14 ± 0.46			P2	0.267
	Group 3	4.27 ± 0.64			P3	0.469
Ulnar motor CMAP amplitude (mV)	Group 1	8.74 ± 1.86	167.985	0.001*	P1	0.001*
	Group 2	4.24 ± 0.61			P2	0.001*
	Group 3	2.13 ± 0.49			P3	0.001*
Ulnar motor CV (m/s)	Group 1	47.90 ± 10.45	26.772	0.001*	P1	0.001*
	Group 2	39.69 ± 2.99			P2	0.001*
	Group 3	33.05 ± 2.42			P3	0.001*
Peroneal motor DL (ms)	Group 1	6.41 ± 1.15	2.858	0.166	P1	0.201
	Group 2	6.81 ± 0.69			P2	0.059
	Group 3	7.14 ± 1.03			P3	0.279
Peroneal motor CMAP amplitude (mV)	Group 1	2.33 ± 0.77	57.371	0.001*	P1	0.001*
	Group 2	1.41 ± 0.15			P2	0.001*
	Group 3	0.70 ± 0.28			P3	0.001*
Peroneal motor CV (m/s)	Group 1	24.66 ± 3.09	102.651	0.001*	P1	0.001*
	Group 2	31.11 ± 1.46			P2	0.001*
	Group 3	35.30 ± 2.27			P3	0.001*
Tibial motor DL (ms)	Group 1	6.54 ± 1.31	1.142	0.326	P1	0.334
	Group 2	6.84 ± 0.57			P2	0.142
	Group 3	7.00 ± 0.87			P3	0.610
Tibial motor CMAP amplitude (mV)	Group 1	2.46 ± 0.49	18.046	0.001*	P1	0.008*
	Group 2	1.88 ± 0.32			P2	0.001*
	Group 3	1.23 ± 0.36			P3	0.007*
Tibial motor CV (m/s)	Group 1	33.59 ± 3.28	16.655	0.001*	P1	0.009*
	Group 2	30.11 ± 2.91			P2	0.001*
	Group 3	27.72 ± 3.50			P3	0.023*

DL distal latency, CMAP compound motor action potential, CV conduction velocity, (ms) millisecond, (mv) millivolt, (m/s) meter per second, P1 post hoc significance between group 1 and 2, P2 post hoc significance between group 1 and 3, P3 post hoc significance between group 2 and 3
* means statistically significant