Table 1. Association between NCS, CSA, palmar bowing and flattening ratio using the cutoff values from ROC curves.

		NCS				p -Value
		Positive		Negative
		Count	%	Count	%
CSA1	Positive	55	66.3	2	40.0	0.232
	Negative	28	33.7	3	60.0
CSA2	Positive	73	88.0	1	20.0	< 0.001*
	Negative	10	12.0	4	80.0
CSA3	Positive	67	80.7	0	0.0	< 0.001*
	Negative	16	19.3	5	100.0
CSA2–1	Positive	79	95.2	0	0.0	< 0.001*
	Negative	4	4.8	5	100.0
CSA2–3	Positive	54	65.1	2	40.0	0.258
	Negative	29	34.9	3	60.0
Power Doppler	Positive	34	41.0	0	0.0	0.068
	Negative	49	59.0	5	100.0
Palmar bowing	Positive	52	62.7	4	80.0	0.434
	Negative	31	37.3	1	20.0
Flattening ratio	Positive	41	49.4	3	60.0	0.645
	Negative	42	50.6	2	40.0

Abbreviations: CSA1, cross-sectional area 1; NCS, nerve conduction study; ROC, receiver operating characteristic.

Note: p value <0.001 and signifies statistical significance of these values.