Table 3 Univariate logistic regression analysis of risk factors for delayed cognitive recovery at 30 days

Risk factors

OR(95%CI)

P value

OR(95%CI)

P value

Age(age ≥ 70, age<70)

0.841(0.327–2.163)

0.719

Smoking

1.077(0.452–2.566)

0.867

Medical history

 Diabetes mellitus

2.697(1.060–6.861)

0.037**

6.508(2.049–20.664)

0.001**

 History of cerebrovascular disease

5.244(1.828–15.042)

0.002**

10.211(2.842–36.688)

<0.001**

 Previous major surgery history

3.561(1.245–10.185)

0.018**

0.065*

Surgical data

VICA(Sevoflurane combined with propofol was used for anesthesia)

2.302(0.735–7.212)

0.153*

5.306(1.272–22.138)

0.022**

Hypotension(MAP ≤ 65mmHg, ≥5 min)

0.900(0.332–2.437)

0.836

Perioperative inadvertent hypothermia

(< 35℃)

3.111(1.163–8.322)

0.024**

5.688(1.693–19.109)

0.005**

Pre-NLR ≥ 2.5

0.797(0.296–2.149)

0.654

NRS (resting) ≥ 4 at 1st day after surgery

1.187 (0.364–3.869)

0.776