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Table 2 Diagnostic procedures performed for the IPF diagnosis

From: Risk factors for diagnostic delay in idiopathic pulmonary fibrosis

 

All patients (n = 204)

Total delay > 2 years (n = 98)

Total delay < 2 years (n = 92)

P-value

HRCT pattern

0.27

 UIP, n (%)

142 (73.2%)

75 (78.1%)

59 (67.8%)

 Possible UIP, n (%)

39 (20.1%)

16 (16.7%)

20 (23.0%)

 Not UIP, n (%)

13 (6.7%)

5 (5.2%)

8 (9.2%)

BAL performed

 No, n (%)

120 (58.8%)

60 (61.2%)

49 (53.3%)

0.27

 Yes, n (%)

84 (41.2%)

38 (38.8%)

43 (46.7%)

Surgical lung biopsy performed

0.25

 No, n (%)

180 (88.2%)

83 (84.7%)

83 (90.2%)

 Yes, n (%)

24 (11.8%)

15 (15.3%)

9 (9.8%)

Cryobiopsy performed

0.02

 No, n (%)

188 (92.2%)

95 (96.9%)

81 (88.0%)

 Yes, n (%)

16 (7.8%)

3 (3.1%)

11 (12.0%)

Velcro crackles on lung auscultation

0.32

 No, n (%)

26 (13.6%)

13 (14.1%)

8 (9.3%)

 Yes, n (%)

165 (86.4%)

79 (85.9%)

78 (90.7%)

  1. HRCT high resolution computed tomography, UIP usual interstitial pneumonia, BAL Bronchoalveolar lavage
  2. The HRCT pattern is classified according to 2011 ATS/ERS/JRS/ALAT guidelines [12]