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. 2018 Apr 13;16(1):71–78. doi: 10.1093/ons/opy061

TABLE 5.

Characteristics of Patients with Motor Evoked Potential (MEP) Monitoring vs no MEP Monitoring

	MEP Monitoring		No MEP Monitoring
Patient Characteristics	n	%	n	%	P-value
Sex					.23
Male	40	60.6	109	52.2
Female	26	39.4	100	47.8
Age (yr)					.25
>50	35	54.5	129	61.7
Ethnicity					.19
White	30	45.5	111	53.1
Black	8	12.1	23	11.0
Hispanic	26	39.4	58	27.8
Other	2	3.0	17	8.1
ASA Class^a > II	37	56.1	95	45.5	.16
Operated Vertebral Levels > 1	23	34.8	92	44.0	.20

^aAmerican Society of Anesthesiologists physical status classification.