Relationship between sonographically measured median nerve cross-sectional area and presence of peripheral neuropathy in diabetic subjects

Table 4 Comparison of median nerve cross-sectional area between diabetics without diabetic peripheral neuropathy, diabetics with mild diabetic peripheral neuropathy and diabetics with moderate/severe diabetic peripheral neuropathy

Median nerve CSA (mm2)	Peripheral neuropathy			P-value
	Absent (n = 34)	Mild (n = 32)	Moderate/severe (n = 19)
Carpal tunnel	11.8 ± 2.4a	13.2 ± 2.6a	12.3 ± 2.1a	0.062
5 cm Proximal	7.9 ± 2.2b	8.3 ± 2.2b	7.6 ± 1.4b	0.145

CSA: Cross sectional area; DPN: Diabetic peripheral neuropathy; NB: The same alphabets in each row indicate insignificant differences using scheffe post hoc test to evaluate intergroup differences.