Table 5 Information regarding intraoperative pain or discomfort, analgesic and sedative drugs usage, conversion of neuraxial anesthesia to general anesthesia, duration of surgery, and postoperative numbness and motor weakness in lower extremities

Intraoperative pain or discomfort, n (%)

18(36)

15(30)

7(14) ^*

6.614

0.037

Midazolam dosage (mg), median(IQR)

0(0–1)

0(0–1)

0(0–0) ^*

7.810

0.020

Ketamine dosage (mg), median (IQR)

0(0–20)

0(0–0) ^*

0(0–0) ^*

8.204

0.017

Conversion of neuraxial anesthesia to general anesthesia, n (%)

6(12)

0(0) ^*

0(0) ^*

9.722

0.003

Duration of surgery (minutes), mean ± SD

63.2 ± 9.0

56.9 ± 9.6^*

57.9 ± 10.2 ^*

6.246

0.002

Postoperative numbness and motor weakness, n (%)

10(20)

11(22)

3(6)^*

6.328

0.041