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Table 4 Multivariable Cox regression analysis results

From: Risk factors for postoperative delirium in patients with triple-branched stent graft implantation

Variables

β

SE

Wald

AHR

95%CI

P

Nature of occupation

Manual worker

Reference

Non-manual worker

−0.591

0.257

5.313

0.554

0.335–0.915

0.021

APACHE-II score

< 15

Reference

15–20

0.241

0.265

0.829

1.272

0.758–2.137

0.362

> 20

1.212

0.345

12.316

3.359

1.707–6.609

< 0.001

Hypoxemia

0.613

0.256

5.745

1.846

1.118–3.048

0.017

Analgesics and sedatives

≤2

Reference

3–4

0.753

0.311

5.855

2.122

1.154–3.904

0.016

> 4

1.219

0.437

7.777

3.383

1.436–7.967

0.005

  1. SE Standard error, AHR Adjusted hazard ratio, CI Confidence intervals
  2. Age, body mass index and mechanical ventilation duration have been adjusted
  3. APACHE-II Acute physiology and chronic health evaluation II