[Table/Fig-6]:

Electrodiagnostic Parameters – Sensory.

Electrodiagnostic Parameters	Number of patients with Right CTS	Number of patients with Left CTS	Controls - Right hands	Controls -Left hands	p-value
Mean median sensory nerve action potential (SNAP) distal latency (measured in milliseconds)	2.43±0.09	2.18±0.05	2.75±0.04	2.91±0.08	Right-0.008 Left-0.027
Comparison of Median SNAP distal latency (measured in milliseconds) with clinical grading	Mild- 1.32 Moderate-2.61 Severe-2.77	Mild- 1.12 Moderate-2.08 Severe-2.96			Right - 0.035 Left - 0.007
Mean SNAP latency difference (measured in milliseconds) between median and ulnar nerves (normal cut-off – 0.2 milliseconds)	0.78±0.01	0.54±0.01	0.19±0.05	0.18±0.02	0.001 on both sides
Number of hands with CTS having mean SNAP latency difference between median and ulnar nerves > 0.2 milliseconds	33 hands (16 with right CTS and 17 with bilateral CTS)	29 hands (10 with left CTS and 19 with bilateral CTS)			Right -0.038 Left – 0.021
Comparison of SNAP distal latency difference between median and ulnar nerves (> 0.2 milliseconds) with clinical grading	Mild-11 Moderate-19 Severe-3	Mild-13 Moderate-14 Severe-2			Right - 0.066 Left - 0.016
Mean median SNAP amplitude (measured in millivolts)	8.55±0.18	8.81±0.21	17.03±1.1	17.33±1.4	<0.001 on both sides
Comparison of Mean median SNAP amplitude (measured in millivolts)	Mild-8.98 Moderate-9.40 Severe-6.88	Mild-10.44 Moderate-10.16 Severe-1.04			Right - 0.80 Left - 0.21
Mean median SNAP conduction velocity (measured in meters per second)	34.22±1.11	32.09±1.07	52.09±2.21	51.21±2.3	<0.001 on both sides
Comparison of Mean median SNAP conduction velocity with clinical grading	Mild-53.31 Moderate-50.68 Severe-43.16	Mild-52.01 Moderate-50.52 Severe-48.35			Right - 0.11 Left - 0.56