Table 2 Co-morbidities on admission

Interstitial pneumonia

357

(2.2)

3,619

(5.1)

<0.001

Lung cancer

728

(4.4)

6,983

(9.8)

<0.001

Heart failure

3,350

(20.4)

12,704

(17.9)

<0.001

Ischemic heart disease

998

(6.1)

4,619

(6.5)

0.048

Cardiac arrhythmia

880

(5.4)

3,560

(5.0)

0.065

Pulmonary embolism

31

(0.2)

206

(0.3)

0.025

Cor pulmonale

110

(0.7)

806

(1.1)

<0.001

Cerebrovascular disease

2,816

(17.2)

3,992

(5.6)

<0.001

Chronic liver disease

171

(1.0)

1,102

(1.6)

<0.001

Chronic renal failure

345

(2.1)

1,525

(2.1)

0.723

Anxiety/depression

227

(1.4)

1,025

(1.4)

0.562

Bone fracture

353

(2.2)

812

(1.1)

<0.001