Table 1.

Pearson’s correlation coefficient of feet-ESC with tests of peripheral nerve function among the participants

No	Tests	CC	P
1	ESC-hands	0.592	<0 .0001
2	Pain sensitivity	0.406	<0 .0001
3	Differences in temperature perception	0.304	<0 .0001
4	Achilles Reflex	-0.405	<0 .0001
5	Vibration perception by 128Hz tuning fork	-0.391	<0 .0001
7	Pressure perception by 10 g-MF	-0.300	<0 .0001
8	QST by neurothesiometer:VPT ≥ 25 V	-0.383	<0 .0001
9	Sural nerve amplitude	0.163	<0.014
10	Sural nerve velocity	0.249	<0.0001
11	Peroneal nerve amplitude	0.184	<0.006
12	Peroneal nerve velocity	0.278	<0.0001
13	Painful DPN by NSS ≥ 5	-0.230	<0 .0001
14	DPN by NDS ≥ 3	-0.469	<0 .0001
15	Risk of foot ulcer by NDS ≥ 6	-0.398	<0 .0001
16	Severity of DPN by NDS ≥ 3	-0.442	<0 .0001

DPN diabetic peripheral neuropathy. ESC electrochemical skin conductance. NSS Neuropathy symptom score. NDS neuropathy disability score. QST quantitative sensory testing. VPT vibration perception threshold. 10-g MF 10 gram monofilament. CC correlation coefficient