Table 3 Risk factors for POD within 72 h after noncardiac surgery

Intraoperative pEEG

Yes

0.35 (0.20–0.64)

0.33 (0.18–0.60)

No

Ref.

Age, per 10 years

2.81 (2.19–3.60)

2.53 (1.96–3.27)

Sex, male

1.28 (0.77–2.12)

1.33 (0.80–2.20)

Formula

I (morphine)

Ref.

Ref.

II (morphine + keto)

0.31 (0.17–0.58)

0.57 (0.30–1.07)

III (fentanyl)

0.37 (0.02–6.07)

0.39 (0.02–6.39)

IV (fentanyl + keto)

3.22 (0.17–61.85)

3.61 (0.14–94.84)

V (morphine + ketamine)

2.77 (0.15–52.05)

ASA

≥ 3

4.64 (2.16–9.99)

1.24 (0.56–2.73)

Emergency

3.40 (1.69–6.85)

3.59 (1.73–7.47)