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GAP data summary.
| Variable | GAP points | No. of patients |
|---|---|---|
| Gender | ||
| Female | 0 | 27 (13.0) |
| Male | 1 | 180 (87.0) |
| Age, years | ||
| ≤60 | 0 | 71 (34.3) |
| 61–65 | 1 | 33 (15.9) |
| >65 | 2 | 103 (49.8) |
| Physiology | ||
| FVC, %predicted | ||
| >75 | 0 | 105 (50.7) |
| 50–75 | 1 | 80 (38.6) |
| <50 | 2 | 22 (10.6) |
| DLco, %predicted | ||
| >55 | 0 | 86 (41.5) |
| 36–55 | 1 | 55 (26.6) |
| <35 | 2 | 65 (31.4) |
| GAP stage | ||
| Stage I | 0–3 | 107 (47.5) |
| Stage II | 4–5 | 96 (42.6) |
| Stage III | 6–8 | 22 (9.9) |
