Table 2.

Comparison of bilateral nerve electromyography in typical CIDP, DADS and LSS.

	Typical CIDP (n = 64)		DADS (n = 12)		LSS (n = 10)		P value
	Median	Q1–Q3	Median	Q1–Q3	Median	Q1–Q3
Median nerve
MCV (m/s)	42.80	28.90–53.15	45.50	36.90–46.00	46.05	45.43–55.15	0.175
CMAP (mV)	4.30	2.28–7.20	7.20	3.60–9.50	7.45	6.00–9.03	0.016*
F-Lat (ms)	35.70	30.60–49.55	32.20	28.75–35.45	33.90	32.68–34.63	0.256
SCV (m/s)	51.00	43.00–61.20	55.50	50.50–61.95	40.25	34.50–44.13	0.004#, 0.001&
SNAP (uV)	14.20	10.83–23.10	18.00	14.65–36.25	13.45	11.38–15.60	0.075
Ulnar nerve
MCV (m/s)	43.50	33.33–58.80	44.55	34.10–47.43	43.90	42.98–46.58	0.852
CMAP (mV)	5.40	3.16–7.65	5.00	4.43–11.75	9.05	6.63–10.78	0.072
F-Lat (ms)	33.70	28.85–42.08	33.60	32.08–41.78	34.75	33.60–37.70	0.638
SCV (m/s)	56.00	44.25–61.25	55.30	46.50–58.20	41.85	33.43–42.70	0.000#,0.007&
SNAP (uV)	15.00	9.15–22.05	13.00	12.70–35.05	10.15	8.10–12.60	0.105
Radial nerve
SCV (m/s)	56.60	44.38–68.68	55.30	50.90–69.00	42.65	38.63–52.53	0.040#
SNAP (uV)	14.20	10.83–23.10	14.10	13.20–31.70	16.05	15.30–22.33	0.447
Tibial nerve
CMAP (mV)	2.45	0.69–11.28	9.25	0.50–12.15	10.70	6.75–14.15	0.022#
F-Lat (ms)	56.00	50.00–70.40	63.95	62.48–68.85	57.90	55.50–59.00	0.038*
Peroneal nerve
MCV (m/s)	40.00	31.85–42.98	34.40	24.55–36.03	36.20	35.00–36.85	0.140
CMAP (mV)	2.35	0.26–4.18	4.75	0.23–5.13	4.35	3.28–13.50	0.012#
Sural nerve
SCV (m/s)	45.00	38.00–51.90	44.00	41.00–61.30	37.15	36.30–43.58	0.194
SNAP (uV)	10.50	7.20–14.80	3.10	3.00–21.90	13.35	10.75–13.93	0.326

Italic indicates the p < 0.05.

MCV motor nerve conduction velocity, CMAP compound motor action potential, F-Lat F-wave latency, SCV sensory nerve conduction velocity, SNAP sensory nerve action potential.

*Typical CIDP compared with DADS.

^#Typical CIDP compared with LSS.

^&DADS compared with LSS. Q1 = the first quartile; Q3 = the third quartile.