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Patient characteristics
| Stable IPF (N = 33) | Acute exacerbation of IPF (N = 20) | P value | |||
|---|---|---|---|---|---|
| Age (years) | 65.0 | (34–79) | 69.0 | (41–82) | 0.13 |
| Sex (male/female) | 25/8 | 14/6 | 0.64 | ||
| Smoking (s/ex/n) | 8/15/10 | 1/14/5 | 0.12 | ||
| P/F ratio | 384.3 | (283.3–491.9) | 138.7 | (55.4–276.3) | <0.001 |
| A-a DO2 | 19.4 | (−3.5 to 52.7) | 185.8 | (80.8–553.2) | <0.001 |
Data presented as median (range). P/F ratio is PaO2/fraction of inspired oxygen ratio
IPF idiopathic pulmonary fibrosis, s current smoker, ex ex-smoker, n nonsmoker
