Table 2 Patients’ demographics

Demographics

 N (%)

158 (100.0)

131 (82.91)

27 (17.09)

Sex (N (%))

 Women

79 (50.00)

60 (45.80)

19 (70.37)¹

0.020

 Men

79 (50.00)

71 (54.20)

8 (29.63)¹

 Age (years)

59.41 ± 11.26

59.34 ± 11.95

59.78 ± 7.01

lp

 BMI (kg/m²)

30.28 ± 6.88

29.58 ± 6.38

33.66 ± 8.07

0.007

Comorbidities (N (%))

 Cardiorespiratory

93 (58.86)

73 (55.73)

20 (74.07)

0.078

Preoperative Sleep Features

 Apnea Hypopnea Index (hr⁻¹)

20.20 ± 19.11

17.36 ± 16.58

33.95 ± 23.99

0.001

 Total Arousal Index (hr⁻¹)

20.38 ± 14.53

18.32 ± 12.32

30.38 ± 19.46

0.002

 Respiratory-Related Arousal Index (hr⁻¹)

12.48 ± 14.41

10.39 ± 11.89

22.66 ± 20.12

0.004

 Moderate to Severe Sleep Apnea: N (%)

81 (51.27)

61 (46.56)

20 (74.07)

0.009

Preoperative Physiological Features

 Overnight SpO₂

  Standard deviation (%)

1.93 ± 1.00

1.75 ± 0.72

2.81 ± 1.55

 < 0.001

  Entropy

1.85 ± 0.40

1.79 ± 0.35

2.14 ± 0.49

 < 0.001

Overnight Desaturation Burdens

 Average

9.30 ± 3.08

8.77 ± 2.24

11.88 ± 4.83

0.001

 Standard deviation

4.02 ± 2.40

3.65 ± 2.00

5.82 ± 3.23

 < 0.001

 Entropy

4.63 ± 0.96

4.53 ± 0.94

5.08 ± 0.95

0.002

Overall Nocturnal Desaturation Burden

2.91 ± 2.69

2.50 ± 1.94

4.87 ± 4.40

0.005

Below Average Burden

2.11 ± 1.09

1.92 ± 0.73

3.04 ± 1.82

 < 0.001