Table 1 Descriptive variables of the control group and dexmedetomidine group

Age (year)

51.2 ± 13.2

54.7 ± 12.5

0.076

Weight (kg)

68.1 ± 10.5

68.3 ± 11.1

0.919

ASA grade (I/II)

7/76

9/75

0.617

Time length of operation (min)

146.6 ± 70.8

160.2 ± 62.7

0.193

Time length of anesthesia (min)

175.2 ± 72.2

190.2 ± 67.6

0.122

Steward score out of PACU

5.98 ± 0.15

5.95 ± 0.21

0.213

Time length of operation end to fully awake (min)

13.6 ± 6.5

14.9 ± 7.3

0.417

Ureteral catheter removal time (6–12 h/12–24 h/more than 24 h after operation)

12/46/25

9/38/37

0.173

Operation type (general surgery/thoracic surgery/orthopedics/otolaryngology/stomatology/ plastic surgery)

33/14/31/5/0/0

31/20/23/7/1/2

0.343

The number of patients receiving postoperative analgesia treatment

22 (26.5%)

21 (25.0%)

0.482