Table 1. Demographic Data of Patients in Groups D and F.

	Group D (n = 30)	Group F (n = 30)	P value
Age (years)	43.30 (10.36)	41.73 (9.83)	0.551
Weight (kg)	61.27 (8.17)	62.23 (8.32)	0.652
Height (cm)	164.97 (7.79)	165 (7.80)	0.882
Gender (Male/Female)	20/10	21/9	0.677
ASA physical status (I/II)	24/6	25/5	0.334
The type of lumbar surgery Tumor (intradural extramedullary) Canal stenosis Listhesis Pott’s spine	18 05 05 02	17 03 09 01	0.819
Duration of surgery (min)	192 (21.71)	191.88 (20.14)	0.422

Data expressed as mean (standard deviation) or numbers.

ASA, American Society of Anesthesiologists; n, number of patients; D, dexmedetomidine; F, fentanyl; n, number of cases.