Table 1 Baseline characteristics of study population and control group.

From: Risk and mortality of aspiration pneumonia in Parkinson’s disease: a nationwide database study

Population

Patients with PD (N = 10,159)

Patients without PD (N = 39,574)

P-value

Characteristics

No

%

No

%

Sex

Male

3887

38.3

15,066

38.1

 

Female

6272

61.7

24,508

61.9

 

Age at diagnosis (year)

40–50

319

3.1

1274

3.2

 

50–60

923

9.1

3670

9.3

 

60–70

2943

29.0

11,644

29.4

 

70–80

4487

44.2

17,434

44.1

 

80–

1487

14.6

5552

14.0

 

Region of residence

Seoul and Incheon

2202

21.7

8940

22.6

 < .001

Gyeonggi and Gangwon

2124

20.9

8734

22.1

 

Busan, Daegu, Ulsan, and Gyeongsang

3267

32.2

11,052

27.9

 

Daejeon, Sejong, and Chungcheong

982

9.7

4727

11.9

 

Gwangju, Jeola, and Jeju

1584

15.6

6086

15.4

 

Not identified

0

35

0.1

 

Comorbidities

Hypertension

6348

62.5

17,971

45.4

 < .001

Diabetes

3822

37.6

9279

23.4

 < .001

Ischemic heart disease

2297

22.6

5263

13.3

 < .001

Congestive heart failure

1268

12.5

2905

7.3

 < .001

Cancer

901

8.9

2474

6.3

 < .001

Tuberculosis

379

3.7

1096

2.8

 < .001

Peripheral arterial disease

1840

18.1

3924

9.9

 < .001

Atrial fibrillation

414

4.1

845

2.1

 < .001

Chronic kidney disease

187

1.8

323

0.8

 < .001

Dyslipidemia

3350

33.0

8080

20.4

 < .001

Cerebrovascular disease

3605

35.5

3992

10.1

 < .001

Dementia

1301

12.8

907

2.3

 < .001

COPD

3640

35.8

12,708

32.1

 < .001

Seizure disorder

974

9.6

607

1.5

 < .001

  1. PD Parkinson’s disease, COPD chronic obstructive pulmonary disease.
  2. Charlson comorbidity index was included in the analysis.