Table 4. Clinical and functional characteristics of the IPF patients with positive or negative cultures of fibroblasts.

	Fibroblasts (+)	Fibroblasts (−)	P value
Number of patients (%)	12 (46%)	14 (54%)
Age	75 [66–84]	72 [56–84]	0.4
Gender (Male)	7 (58)	12 (72)	0.06
Smoker (ever)	8 (66)	8 (57)	0.7
Exacerbation	2	1	0.58
Delay since diagnosis (days)	18 [0–236]	7 [0–655]	0.74
Death or lung transplant during follow up	4 (33)	4 (42)	1
Oral steroids	4 (33)	2 (14)	0.36
CCL2 (pg/ml)	269 [102–1033]	64 [0–341]	0.02
CXCL12 (pg/ml)	0 [0–22.7]	0 [0–0]	0.54
PaO2 (mm Hg)	76 [50–101]	77 [45–91]	0.8
VC (% pred)	79 [40–101]	67 [34–108]	0.57
DLCO (% pred)	35 [15–59]	35 [27–91]	0.36
Pulmonary Hypertension	1	2	1
HRCT fibrosis score	8 [4]–[13]	8 [6]–[14]	0.56
Detection of Fibrocytes in BAL	5 (41)	9 (64)	0.43

Data are expressed as median [range] or N (%).