Baseline FEV1 | FEV1 annual change | Baseline FVC | FVC annual change | Baseline VC | VC annual change | Baseline TLC | TLC annual change | Baseline KCO | KCO annual change | |
---|---|---|---|---|---|---|---|---|---|---|
Whole population (n = 48) | 89.4 (51.0–136) | −0.2 | 96.7 (47.0–139.0) | −1.0 | 94.9 (51.0–134) | −0.7 | 77.5 (44.0–121.0) | −2.0 | 94.6 (49.0-135–.0) | −2.5 |
Lifelong non smoker (n = 6) | 105.8 (77.0–36.0) | −1.2 | 108.7 (91.0–139.0) | −2.5 | 105.0 (94.0–134.0) | −2.32 | 83.2 (64.0–100.0) | −4.9 | 106.5 (90.0-130.0) | −3.9 |
Ex smoker <20 pack years (n = 13) | 91.9 (51.0–133.0) | −1.8 | 93.8 (54.0–133.0) | −2.8 | 90.4 (51.0–127) | −2.61 | 70.1 (44.0–88.0) | −1.1 | 109.2 (78.0-135.0) | −7.2 |
Ex smoker 20–40 pack years (n = 16) | 96.0 (69.0–125.0) | 0.0 | 103.8 (67.0–134.0) | −1.2 | 99.9 (65.0–125.0) | −0.2 | 83.9 (53.0–121.0) | −3.5 | 95.6 (70.0-147.0) | −1.0 |
Ex smoker >40 pack years (n = 9) | 67.5 (53.0–98.0) | +1.0 | 80.3 (47.0–107.0) | +1.0 | 81.9 (57.0–108.0) | +0.7 | 70.8 (48.0–98.0) | +1.9 | 78.4 (57.0-112.0) | −1.4 |
Current smoker (n = 4) >40 pack years | 80.0 (72.0–86.0) | +1.01 | 97.0 (84.0–109.0) | +1.75 | 102.0 (88.0–115.0) | +0.18 | Not calculated | Not calculated | 68.5 (49.0-109.0) | −2.39 |