Table 1 Variables in the Equation by logistic regression.

From: Perioperative multidisciplinary implementation enhancing recovery after hip arthroplasty in geriatrics with preoperative chronic hypoxaemia

Possible risk factors

B

S.E.

Wald

Df

Sig.

Exp(B)

95.0% C.I.for EXP(B)

Lower

Upper

Gender

0.321

0.462

0.482

1

0.488

1.378

0.557

3.412

Age

0.018

0.551

0.001

1

0.974

1.018

0.346

2.999

Hypotension

1.456

0.485

9.012

1

0.003*

4.289

1.658

11.097

General anaesthesia

1.628

0.487

11.165

1

0.001*

5.094

1.96

13.238

Hypoxaemia

−0.101

0.504

0.04

1

0.841

0.904

0.337

2.427

Anaemia

0.823

0.499

2.722

1

0.099

2.277

0.857

6.054

Transfusion

0.333

0.591

0.318

1

0.573

1.395

0.438

4.442

Cardiovascular diseases

−0.065

0.433

0.022

1

0.881

0.937

0.401

2.191

Cerebral diseases

1.083

0.558

3.774

1

0.052

2.954

0.99

8.812

Diabetes

1.034

0.615

2.826

1

0.093

2.812

0.842

9.385

Pulmonary diseases

0.553

0.801

0.477

1

0.49

1.739

0.362

8.361

Surgery

−0.532

0.468

1.292

1

0.256

0.588

0.235

1.47

Constant

−2.277

1.108

4.226

1

0.04

0.103

  
  1. One step to logistic regression was used in this analysis as details: Age, 1 = no more than 70 y, 2 = 71–90 y, 3 = above 91; Hypoxemia, 1 = mild, 2 = moderate, 3 = severe; Cardiovascular diseases, Cerebral diseases, Diabetes, General anesthesia, Hypotension, Pulmonary diseases, Transfusion, 1 = Yes, 0 = No; Gender, female = 1, male = 0; Surgery, 1 = total hip arthroplasty, 0 = hemi-. *P < 0.05.
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