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Table 1 Baseline characteristics of patients newly initiated on interferon therapy between 2001 and 2012

From: Pulmonary arterial hypertension associated with interferon therapy: a population-based study

Patient characteristics

Number

Percent

Indication for interferon

 Multiple sclerosis

7190

35.75

 Hepatitis C

12,923

64.25

Age

 20–29

1205

5.99

 30–39

3154

15.68

 40–49

7526

37.42

 50–59

7084

35.22

 60–65

1144

5.69

Gender

 Male

9906

49.25

 Female

10,207

50.75

Comorbiditya

 Hypertension

3612

17.96

 Other liver diseaseb

2647

13.16

 Diabetes

1589

7.90

 Chronic pulmonary disease

750

3.73

 Sleep apnea

338

1.68

 Connective tissue disorder

331

1.65

 Obesity

294

1.46

 HIV/AIDS

268

1.33

 Valvular heart disease

156

0.78

 Congestive heart failure

86

0.43

 Atrial fibrillation and flutter

74

0.37

 Congenital heart disease

8

0.04

 

Mean ± STD (Median)

Age

46.36 ± 9.24 (48.00)

Follow-up time, months

29.49 ± 27.41 (20.00)

  1. aA patient could have more than one comorbidity. bExcluding hepatitis C