Table 3 Multivariate logistic analyses of risk factors for postoperative hypoxaemia and a prolonged intensive care unit stay

Postoperative hypoxaemia

Preoperative hypoxaemia (yes vs. no)

3.54

1.34–10.29

0.010

3.33

1.16–10.52

0.025

Obstructive sleep apnoea (yes vs. no)

4.42

1.66–12.89

0.003

3.28

1.14–10.10

0.028

AHI > 30/h (vs. < 15/h)

8.64

2.14–58.60

0.001

6.65

1.56–46.26

0.008

Prolonged intensive care unit stay

Preoperative hypoxaemia (yes vs. no)

0.76

0.29–2.05

0.592

0.77

0.26–2.28

0.636

Obstructive sleep apnoea (yes vs. no)

3.84

1.32–11.17

0.010

4.05

1.27–12.90

0.018

AHI > 30/h (vs. < 15/h)

5.46

1.62–18.41

0.005

5.58

1.54–20.24

0.009