Table I.

Patient characteristics in studies comparing the use of dexmedetomidine with midazolam for sedation during endoscopy.

Authors	Year	Patients, n	Age, years	Male, n	Female, n	Refs.
Wei et al	2014	30/30	35.3/36.6	16/17	14/13	(17)
Sethi et al	2014	30/30	42/44	13/14	17/16	(18)
Demiraran et al	2007	25/25	42.2/43.3	13/9	12/16	(19)
Dere et al	2010	30/30	57.9/60.1	22/21	8/9	(20)
Zhang et al	2013	30/30	≥65	NR	NR	(21)
Li et al	2014	30/30	55.1	38	22	(22)
Arpaci and Bozkirli	2013	20/20	50.4/47.1	6/7	14/13	(23)
Karaaslan et al	2007	35/35	32.5/34.4	23/21	12/14	(24)
Liao et al	2012	99/98	58.5/60.1	61/62	38/36	(25)

NR, not reported.