Table 3 Cox proportional hazard model for risk factors of aspiration pneumonia.

PD*

4.21

3.87–4.58

 < .0001

Sex

Male

Ref

–

Female

0.416

0.382–0.454

 < .0001

Age at diagnosis (year)

40–50

Ref

–

50–60

2.45

1.299–4.623

0.0057

60–70

6.391

3.513–11.626

 < .0001

70–80

12.985

7.155–23.566

 < .0001

80 + 

22.253

12.196–40.603

 < .0001

Comorbidities

Hypertension

0.971

0.865–1.089

0.6127

Diabetes

1.1

0.983–1.232

0.0973

Ischemic heart disease

1.022

0.909–1.15

0.7144

Congestive heart failure

1.121

0.971–1.294

0.1197

Cancer

0.959

0.811–1.134

0.6275

Tuberculosis

1.429

1.17–1.744

0.0005

Peripheral arterial disease

0.849

0.748–0.963

0.0107

Atrial fibrillation

1.127

0.887–1.431

0.3278

Chronic kidney disease

1.265

0.903–1.772

0.1712

Dyslipidemia

0.909

0.817–1.01

0.0767

Cerebrovascular disease

1.322

1.181–1.479

 < .0001

Dementia

1.858

1.607–2.149

 < .0001

COPD

0.994

0.902–1.094

0.8952

Seizure disorder

0.992

0.827–1.19

0.9292

Comedications

Antihypertensive drug

0.993

0.881–1.119

0.9053

Antidiabetic drug

1.249

1.073–1.454

0.0041

Anticoagulant

1.68

1.102–2.56

0.0158

Antiplatelet drug

1.206

1.048–1.387

0.0089

Benzodiazepines, antipsychotics

0.951

0.821–1.103

0.5099