Table 3. Relationship between mJOA scores in patients with non-compressive myelopathy and SSEP conduction severity.

mJOA score, Modified Japanese Orthopaedic Association score; SSEP, somatosensory evoked potential; Ab/PWF, absent/poor waveform

Variable			mJOA scores		Total
			Moderate	Severe
SSEP conduction severity	Prolonged	Count	9	8	17
		Column %	100%	36.4%	54.8%
	Ab/PWF	Count	0	14	14
		Column %	0.0%	63.6%	45.2%
Total		Count	9	22	31
		% of total	29.0%	71.0%	100%