Table 5 Univariate and multivariate logistic-regression analysis for influencing factors of death in very old

Age

0.024

0.34

0.133

0.869

0.470

0.576

0.129

2.567

BMI < 18

0.138

0.498

0.198

1.251

Malignancy, n (%)

0.000

3.537

1.757

7.120

0.005

0.245

0.091

0.658

Liver and kidney disease, n (%)

0.060

2.949

0.953

9.118

0.317

0.463

0.103

2.089

Anamia, n (%)

0.011

2.260

1.206

4.233

0.080

0.483

0.214

1.092

Platelet < 100 × 10⁹/L, n (%)

0.094

2.202

0.875

5.544

PaO2 < 60 mmHg, n (%)

0.000

3.699

1.854

7.381

0.000

0.216

0.094

0.497

eGFR < 60 mL/min/1.73m2, n (%)

0.006

2.439

1.284

4.633

0.014

0.361

0.160

0.814

Pulse ≥ 110Bpm, n (%)

0.020

2.827

1.176

6.797

0.393

0.580

0.167

2.021

SBP < 100 mmHg, n (%)

0.031

4.389

1.145

16.825

0.931

0.912

0.115

7.243

DBP < 60 mmHg, n (%)

0.011

3.442

1.329

8.917

0.094

0.281

0.063

1.242

Thrombolysis as initial therapy, n (%)

0.078

4.326

0.847

22.079

Anticoagulation as initial therapy, n (%)

0.000

0.253

0.131

0.489

0.005

3.826

1.511

9.688

 ≥ 3 comorbidities n (%)

0.007

2.345

1.258

4.370

0.179

0.547

0.227

1.318