| Subtype (n) | A (20) | B (45) | C (8) | p Value |
|---|---|---|---|---|
| Male/Female | 15/5 | 40/5 | 8/0 | |
| Smoking index (pack-years) | 33.8 (17.5-50.0) | 55.0 (41.1-75.0) | 49.4 (44.0-73.3) | <0.05 |
| age (y/o) | 74.0 (68.5-82) | 72.0 (63.5-75.3) | 68.5 (63.0-71.5) | NS |
| CT score (points) | 6.0 (6-9.5) | 11.0 (7.8-14.0) | 19.0(10.0-20.5) | <0.05 |
| %VC (%) | 117.9(101.2-124.7) | 114.8 (103.6-123.9) | 98.25 (81.5-120.8) | NS |
| FEV1% (%) | 64.2 (49.5-75.7) | 58.9 (43.7-70.5) | 38.3 (33.4-43.0) | <0.05 |
| %FEV1 (%) | 93.4 (72.2-115.6) | 88.5 (64.5-106.9) | 48.3 (38.3-71.3) | <0.05 |
| FVC (L) | 3.1 (2.7-3.8) | 3.5 (3.0-4.0) | 3.2 (2.5-3.5) | NS |
| RV/TLC (%) | 35.8 (30.0-44.5) | 37.4 (32.7-45.3) | 43.3 (37.6-57.7) | NS |
| V50 (L/sec) | 1.1 (0.6-2.2) | 1.1 (0.4-1.9) | 0.4 (0.3-0.7) | NS |
| V25 (L/sec) | 1.2 (0.6-2.3) | 0.3 (0.1-0.5) | 0.2 (0.1-0.3) | NS |
| MMF (L) | 0.8 (0.4-1.7) | 0.8 (0.3-1.4) | 0.3 (0.3-0.6) | NS |
| %DLco/VA (%) | 70.4 (56.7-76.3) | 47.2 (36.7-58.1) | 29.0 (19.0-67.4) | <0.05 |
| %DLco (%) | 62 (46.0-72.3) | 43.3 (36.2-55.4) | 35.7 (21.3-60.7) | <0.05 |