Table 2 Logistic regression of acute exacerbation readmission in elderly patients with COPD within 30 days

Age

0.156

0.179

0.761

0.383

1.169

0.823~1.660

Education level

− 0.358

0.140

6.499

0.011

0.699

0.531~0.921

Smoking status

0.960

0.198

23.516

0.000

2.612

1.772~3.851

Diabetes

0.642

0.413

2.416

0.120

1.900

0.846~4.268

CHD

1.030

0.357

8.334

0.004

2.801

1.392~5.637

Hospitalization times of acute exacerbation of COPD in the past 1 year

1.359

0.267

25.872

0.000

3.891

2.305~6.567

Seasonal factors

–

–

16.110

0.001

–

–

Spring

1.339

0.427

9.833

0.002

3.814

1.652~8.806

Fall

1.184

0.424

7.802

0.005

3.268

1.424~7.502

Winter

1.623

0.409

15.740

0.000

5.070

2.274~11.306

Long-term home oxygen therapy

− 1.125

0.334

11.305

0.001

0.325

0.169~0.626

Regular medication

− 1.161

0.357

10.596

0.001

0.313

0.156~0.630

Rehabilitation exercise

− 0.494

0.298

2.749

0.097

0.610

0.340~1.094

Course of disease

0.006

0.015

0.150

0.699

1.006

0.977~1.035

ADL

− 0.228

0.192

1.409

0.235

0.796

0.547~1.160

GDS

0.119

0.189

0.393

0.531

1.126

0.777~1.631

mMRC

0.021

0.134

0.026

0.873

1.022

0.786~1.327

MNA-SF

1.541

0.224

47.241

0.000

4.671

3.010~7.249

Constant

− 9.085

1.084

70.301

0.000

0.000

–