Table 2.

Comparison of CSAs measured at the 8-point of the A-hands and NCS negative CTS-hands

	CSAs		p value	Cut-off values of CSA	Sensitivity	Specificity
	A-hands (n = 50)	NCS negative CTS-hands(n = 32)
i4	11.8 ± 2.4 (11, 8-19)	14.3 ± 4.6 (13, 7-28)	0.003*	12.5	0.688	0.720
i3	11.5 ± 2.3 (11, 8-19)	14.0 ± 4.3 (13, 8-28)	0.001*	12.5	0.688	0.760
i2	10.9 ± 1.9 (11, 8-16)	11.9 ± 2.1 (12, 8-17)	0.033*	11.5	0.563	0.660
I1	10.7 ± 1.7 (10.5, 8-15)	12.2 ± 2.7 (11.1, 7-20)	0.006*	11.1	0.500	0.680
w	10.7 ± 2.0 (10.5, 7-17)	12.2 ± 2.9 (12, 7-22)	0.002*	11.5	0.594	0.760
o1	10.1 ± 2.2 (10, 6-16)	11.0 ± 2.3 (10, 7-16)	0.082	10.5	0.469	0.600
o2	10.2 ± 2.1 (10, 7-17)	10.6 ± 2.0 (10.5, 6-15)	0.164	10.5	0.500	0.600
o3	9.4 ± 1.9 (9, 6-15)	10.6 ± 2.7 (11, 5-17)	0.031*	10.1	0.563	0.740

Abbreviations: CSAs, cross-section areas; A-hands, asymptomatic hands; CTS-hands, carpal tunnel syndrome hands; NCS, nerve conduction study

Markers of the 8-point: i4, i3, i2, i1, w, o1, o2, and o3 Unit of CSA = mm²

*p < 0.05, by Mann-Whitney U test