Table 1 Demographic and clinical characteristics between patients with and without PONV (n = 205)

Age (years), mean ± SD

31.0 ± 8.6

32.5 ± 8.2

0.187

Female sex, n (%)

63 (70.8)

70 (60.3)

0.003^a

BMI (kg/m²), mean ± SD

39.9 ± 4.6

42.7 ± 5.9

< 0.001^a

ASA classification, n (%)

II

43 (48.3)

21 (18.1)

< 0.001^a

III

38 (42.7)

103 (88.8)

Apfel risk score, n (%)

0

2 (2.2)

9 (7.8)

0.003^a

1

10 (11.2)

30 (25.9)

2

38 (42.7)

50 (43.1)

3

25 (28.1)

35 (30.2)

4

6 (6.7)

0 (0)

Diabetes mellitus, n (%)

18 (20.2)

54 (46.6)

0.003^a

Hypertension, n (%)

17 (19.1)

27 (23.3)

> 0.999

Smoking, n (%)

10 (11.2)

34 (29.3)

0.017^a

His_PONV, n (%)

2 (2.2)

0 (0)

0.155

His_MS, n (%)

5 (5.6)

0 (0)

0.009^a

Types of surgery, n (%)

LSG

59 (66.3)

50 (43.1)

< 0.001^a

LSG-JJB

21 (23.6)

62 (53.4)

LSG-DJB

0 (0)

8 (6.9)

OAGB

1 (1.1)

4 (3.4)

Dur_anesthesia (h), mean ± SD

1.5 ± 0.3

1.7 ± 0.4

< 0.001^a

Dur_operation (h), mean ± SD

1.2 ± 0.3

1.4 ± 0.4

< 0.001^a

IOC (mg), mean ± SD

60.3 ± 8.3

56.6 ± 7.1

0.001^a

PHC, n (%)

47 (52.8)

83 (71.6)

0.252

Sugammadex, n (%)

8 (9.0)

84 (72.4)

< 0.001^a

Total fluid input (ml), mean ± SD

1306.8 ± 323.0

1463.7 ± 374.0

0.016^a

Rescue opioids, n (%)

45 (50.6)

75 (64.7)

0.579