[Table/Fig-5]:

Electro diagnostic parameters – Motor.

Electrodiagnostic Parameters	Number of patients with Right CTS	Number of patients with Left CTS	Controls - Right hands	Controls -Left hands	p-value
Median nerve Mean CMAP distal latency (measured in milliseconds)	4.6±1.5	4.5±1.4	3.2±0.4	3.1±0.5	Right - 0.03 Left – 0.02
Median nerve Compound Muscle Action Potential (CMAP) Distal Motor Latency >4.4 (measured in milliseconds)	39 (19 right sided only + 20 with bilateral)	31 (11 left sided only + 20 with bilateral)	-	-	<0.001 on both sides
Correlation of Median nerve CMAP Distal Motor Latency >4.4 milliseconds with clinical grading	Mild-16 Moderate-11 Severe-12	Mild-12 Moderate-10 Severe-9	-	-	Right - 0.06 Left - 0.12
Median nerve Mean CMAP Amplitudes (measured in millivolts)	10.19±0.77	10.09±0.98	17.34±1.21	15.85±1.23	<0.001 on both sides
Comparison of CMAP Amplitudes (measured in millivolts) with clinical grading	Mild-11.50 Moderate-10.76 Severe-6.27	Mild-12.00 Moderate-10.14 Severe-6.15			Right - 0.075 Left - 0.16
Mean CMAP distal latency difference between median & ulnar nerves (measured in milliseconds)	2.34±0.01	2.73±0.03	0.66±0.04	0.80±0.06	<0.001 on both sides
Comparison of CMAP distal latency difference (>1.10 milliseconds) between median & ulnar nerves with clinical grading	Mild-12 Moderate-16 Severe-11	Mild-9 Moderate-12 Severe-10			Right - 0.77 Left - 0.37
Mean median nerve CMAP conduction velocity (measured in meters/second)	46.03±1.83	50.61±1.14	55.92±2.09	54.28±2.11	Right-0.001 Left-0.08
Correlation of Mean median nerve CMAP conduction velocity (measured in meters/ second) with clinical grading	Mild-51.31 Moderate-50.68 Severe-43.16	Mild-52.01 Moderate-50.52 Severe-48.35			Right - 0.13 Left - 0.14
Mean median nerve F wave Latency (measured in milliseconds)	25.37±1.21	25.29±1.24	31.20±1.98	29.64±1.83	0.001 on both sides