Table 3.

Topic variables included in CDM-based clinical covariate + radiology/EMG report text + EMG grade.

No.	Topic	Keywords
Topic 1	Electrophysiological evidence of sensory nerve dysfunction	Sensory, CMAP, wave, terminal, latency, decreased, prolonged
Topic 2	Descriptions related to CTS Diagnosis	CTS, wrist, nerve, swelling, median, level, axonotmesis, soft
Topic 3	Non-median neuropathy and alternative diagnoses	Ulnar, neuropathy, elbow, axonal, lesion, active, subchondral, styloid, lunate
Topic 4	Degenerative or bony pathology	Bony, significant, abnormality, diffuse, facet, arthrosis, severe
Topic 5	Conduction delays and pathological electrophysiological findings	Stenosis, latency, amplitude, degenerative, demyelination, abnormalities, findings

CDM common data model, EMG electromyography, CMAP compound motor action potential, CTS carpal tunnel syndrome.