Table 1 The characteristics difference according to PACU stay duration

Age

63 [51–72]

59 [48–69]

<0.01

ASA score

 1

92 (1.8)

195 (3.1)

<0.01

 2

2,123 (40.6)

3,298 (52.7)

 3

3,010 (57.6)

2,770 (44.2)

BMI, kg/m²

26.1 [22.6–31.0]

26.3 [22.8–30.9]

0.28

Operative time, minutes

20 [12–31]

20 [12–31]

<0.01

Intraoperative fentanyl use, Yes

2,944 (56.3)

2,843 (45.4)

<0.01

Fentanyl dose, micrograms

100 [50.0–100]

100 [50.0–100]

0.78

Intraoperative NSAID use, Yes

9 (0.2)

22 (0.4)

0.10

Pre/intraoperative acetaminophen use, Yes

8 (0.2)

5 (0.1)

0.38

Pain scale (NRS)

 0–5

3,518 (96.4)

3,413 (98.8)

<0.01

 6–10

133 (3.6)

43 (1.2)