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Table 1 Respondent characteristics

From: Barriers to timely diagnosis of interstitial lung disease in the real world: the INTENSITY survey

Characteristic

Total

(N = 600)

IPF

(N = 279)

Non-IPF

(N = 321)

Median age (range), years

 Male

69 (16–92)

70 (29–92)

66 (16–83)

 Female

62 (21–94)

64 (21–84)

61 (30–94)

Gender, n (%)

 Male

300 (50.0)

164 (58.8)

136 (42.4)

 Female

300 (50.0)

115 (41.2)

185 (57.6)

Diagnosis, n (%)

 Idiopathic pulmonary fibrosis

279 (46.5)

279 (100.0)

0 (0.0)

 Interstitial lung disease *

195 (32.5)

0 (0.0)

195 (60.7)

 Non-specific interstitial pneumonia

93 (15.5)

0 (0.0)

93 (29.0)

 Hypersensitivity pneumonitis

27 (4.5)

0 (0.0)

27 (8.4)

 Sarcoidosis

6 (1.0)

0 (0.0)

6 (1.9)

Time since diagnosis, n (%)

  ≤ 6 months

32 (5.3)

18 (6.5)

14 (4.4)

  > 6 months to 1 year

59 (9.8)

33 (11.8)

26 (8.1)

  > 1 to 2 years

126 (21.0)

61 (21.9)

65 (20.2)

 > 2 to 5 years

204 (34.0)

93 (33.3)

111 (34.6)

  > 5 to 10 years

127 (21.2)

57 (20.4)

70 (21.8)

  > 10 years

52 (8.6)

17 (6.1)

35 (10.9)

Comorbid conditions, n (%)

 Gastroesophageal reflux disease

260 (43.3)

115 (41.2)

145 (45.2)

 Sleep apnea

134 (22.3)

68 (24.4)

66 (20.6)

 Allergy

124 (20.7)

52 (18.6)

72 (22.4)

 Cardiovascular disease

122 (20.3)

59 (21.1)

63 (19.6)

 Pulmonary hypertension

103 (17.2)

37 (13.3)

66 (20.6)

 Other pulmonary conditions 

356 (59.3)

156 (55.9)

200 (62.3)

Family history of ILD, n (%)

 Yes

102 (17.0)

54 (19.4)

48 (15.0)

 No

498 (83.0)

225 (80.6)

273 (85.0)

  1. *Includes interstitial lung disease due to an autoimmune or connective tissue disease, respiratory bronchiolitis-interstitial lung disease, desquamative interstitial pneumonia, cryptogenic organizing pneumonia, lymphoid interstitial pneumonia, idiopathic pleuroparenchymal fibroelastosis, interstitial lung disease due to occupational exposure, radiation therapy-induced interstitial lung disease, and drug-related interstitial lung disease
  2.  Includes chronic obstructive pulmonary disease, asthma, chronic bronchitis/bronchiolitis, bronchiectasis, emphysema, pneumonia, cystic fibrosis, pulmonary edema, lung cancer, and tuberculosis
  3. ILD = interstitial lung disease; IPF = idiopathic pulmonary fibrosis