Comparison of expert and algorithm agreement in measurement of nerve conduction study parameters |
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Authors: | Brian H Tracey Darshan Iyer Eugene A Lesser Frisso J Potts Shai N Gozani |
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Institution: | NeuroMetrix, Inc., 62 Fourth Ave., Waltham, MA 02451, USA |
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Abstract: | In this study, the nerve conduction study (NCS) waveform assignment performance of algorithms used in a commercial electrodiagnostic instrument was compared against three neurophysiology experts for motor, F-wave, and sensory parameters. Assignments were made on a common set of waveforms, thereby eliminating a source of variability present in earlier studies that relied on re-testing patients. The performance of the algorithms was comparable to the experts as quantified by the inter-class correlation coefficient and Bland–Altman analyses. The observed algorithm-expert agreement was higher than previously reported estimates, suggesting that the approach of scoring a common set of waveforms may provide a more accurate measure of algorithm performance. |
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