Effects of dexmedetomidine on evoked potentials in spinal surgery under combined intravenous inhalation anesthesia: a randomized controlled trial

Table 1 Demographic data(mean ± SD)

Group	Age (years)	Gender (male,%)		Operation time (minutes)	Anesthesia time (minutes)	Surgery (cervical/thoracic/lumbar vertebra)
C(n = 27) DL(n = 24) DH(n = 28)	57 ± 12 58 ± 14 52 ± 15	12,44 10,42 14,50	24 ± 3 24 ± 3 23 ± 3	163 ± 73 139 ± 57 133 ± 42	203 ± 76 178 ± 60 171 ± 46	13/4/10
						10/3/11
						7/2/19
P	0.313	0.826	0.736	0.150	0.148

P > 0.05, no significant difference in the three groups. One-way analysis of variance for multiple groups of continuous variables
Abbreviation: BMI body mass index

ISSN: 1471-2253