Increased blood urea nitrogen levels and compromised peripheral nerve function in patients with type 2 diabetes

Table 2 Pearson’s correlation analysis for associations between blood urea nitrogen levels and peripheral nerve functional indices

Item	BUN levels
	r	P value
Motor nerves
MN motor latency	0.163	< 0.001
MN motor amplitude	-0.191	< 0.001
MN motor NCV	-0.135	0.001
UN motor latency	0.222	< 0.001
UN motor amplitude	-0.196	< 0.001
UN motor NCV	-0.123	0.003
CPN motor latency	0.202	< 0.001
CPN motor amplitude	-0.187	< 0.001
CPN motor NCV	-0.194	< 0.001
PTN motor latency	0.213	< 0.001
PTN motor amplitude	-0.201	< 0.001
PTN motor NCV	-0.190	< 0.001
Composite Z-score for motor latency	0.266	< 0.001
Composite Z-score for motor amplitude	-0.287	< 0.001
Composite Z-score for motor NCV	-0.202	< 0.001
Sensory nerves
MN sensory latency	0.139	< 0.001
MN sensory amplitude	-0.226	< 0.001
MN sensory NCV	-0.125	0.003
UN sensory latency	0.240	< 0.001
UN sensory amplitude	-0.271	< 0.001
UN sensory NCV	-0.228	< 0.001
SPN sensory latency	0.200	< 0.001
SPN sensory amplitude	-0.206	< 0.001
SPN sensory NCV	-0.190	< 0.001
SN sensory latency	0.215	< 0.001
SN sensory amplitude	-0.195	< 0.001
SN sensory NCV	-0.216	< 0.001
Composite Z-score for sensory latency	0.242	< 0.001
Composite Z-score for sensory amplitude	-0.268	< 0.001
Composite Z-score for sensory NCV	-0.229	< 0.001
Overall
Overall composite Z-score for latency	0.288	< 0.001
Overall composite Z-score for amplitude	-0.325	< 0.001
Overall composite Z-score for NCV	-0.243	< 0.001

BUN: Blood urea nitrogen; NCV: Nerve conduction velocity; MN: Median nerve; UN: Ulnar nerve; CPN: Common peroneal nerve; PTN: Posterior tibial nerve; SPN: Superficial peroneal nerve; SN: Sural nerve.