Table 1 Basic description of patient population and univariate analysis of potential predictors for postoperative analgesic requirements (mean ± SD)

Analgesic requirements (UD)

3.5 ± 2.35

0 – 3

≥ 4

n

60

31

29

Gender Male/Female

21/39

13/17

8/22

1.64 ^a

0.157

Age (years)

57.4 ± 17.9

60.7 ± 15.8

54.1 ± 19,4

6.67

2.131

0.150

SPS (Logits)

−0.30 ± 1.55

−0.83 ± 1.87

0.15 ± 1.44

−0.98

5.140

0.027

HADS total

14.1 ± 6.42

12.4 ± 5.21

16.1 ± 6.9

−3.67

5.345

0.024

HADS anxiety

4.9 ± 3.86

8.13 ± 4.06

10.2 ± 4.24

−2.07

3.722

0.059

HADS depression

9.1 ± 4.24

3.97 ± 3.21

5.9 ± 4.20

−1.93

4.006

0.050

VRS preop. at rest

0.70 ± 0.93

0.53 ± 0.90

0.87 ± 0.94

−0.33

1.975

0.165

VRS preop. during movement

0.88 ± 1.08

0.63 ± 1.07

1.13 ± 1.04

−0.50

3.376

0.071

Neutrophils (counts/mm³)

61.1 ± 11.27

64.6 ± 12.5

58.3 ± 9.9

6.29

4.734

0.034

Lymphocytes (counts/mm³)

27.2 ± 10.0

23.6 ± 9.91

30.9 ± 8.5

−7.3

9.380

0.003

Neutrophil/Lymphocyte Ratio

2.97 ± 2.52

3.81 ± 3.24

2.13 ± 0.98

1.68

7.376

0.009

Ln(NLR)

0.87 ± 0.61

1.09 ± 0.67

0.66 ± 0.46

0.43

8.606

0.005

Surgery duration (min)

79.0 ± 31.1

76.4 ± 31.9

82.6 ± 30.6

−6.17

0.585

0.447

IV Morphine (mg)

4.7 ± 5.07

4.5 ± 4.9

4.91 ± 5.3

−0.41

0.095

>0.500

Patients receiving opioids in the PACU (n)

39

19

20

>0.500