Characteristic | Bronchiectasis | p-value |
Severe | Moderate | Mild |
Subjects n | 51 | 29 | 40 | |
Male | 25 (49) | 10 (34.5) | 16 (40) | 0.4 |
Age yrs | 68 (60–74) | 69.5 (56.2–77.2) | 67 (59–76.7) | 0.9 |
Ex-smokers | 18 (35) | 9 (31) | 15 (37.5) | 0.9 |
Pack-yr history | 0 (0–8) | 0 (0–2.5) | 0 (0–7) | 0.7 |
FEV1 L | 1.55 (1.30–2.15) | 1.8 (1.34–2.47) | 2.3 (1.9–2.7) | 0.002 |
FEV1 % pred | 69 (47–86) | 78.2 (69.7–89.6) | 82.5 (71.5–96) | 0.006 |
FVC L | 2.45 (1.80–3.20) | 2.55 (2–3.19) | 3.06 (2.5–3.5) | 0.04 |
FVC % pred | 77(61–93) | 85.9 (85–100) | 90 (78.5–106) | 0.01 |
FEV1/FVC ratio | 0.68 (0.58–0.77) | 0.76 (0.65–0.85) | 0.74 (0.66–0.82) | 0.01 |
FEV1/FVC % pred | 89 (73–97) | 94 (85–105) | 94.9 (86–102) | 0.09 |
Purulent sputum when stable % | 100 | 14 | 0 | <0.0001 |
Chronically colonised % | 100 | 58.6 | 0 | <0.0001 |
Chronically colonised with Pseudomonas aeruginosa % | 51.0 | 47.0 | 0 | <0.0001 |
Cystic bronchiectasis on CT scan % | 62.7 | 10.3 | 0 | <0.0001 |
Lobes affected | 5 (4–6) | 4 (1.5–5) | 2 (1–3) | <0.0001 |
Outpatient exacerbations in the preceding 12 months | 3 (1.75–5.25) | 1 (0–3) | 0 (0–1.25) | <0.0001 |