Table 4. Correlation coefficients between quantitative muscle ultrasonography and electrodiagnostic study in the APB of control subjects and CTS patients.

APB, abductor pollicis brevis; CTS, carpal tunnel syndrome; NCS, nerve conduction study; Amp, amplitude; Lat, onset latency; CV, conduction velocity; CSA, cross-sectional area; EI, echo intensity.

^*p<0.05, ^**p<0.01 by Pearson correlation coefficient analysis.