Table 5 Comparison of Radiological Features Between Convex Pattern and Non-convex Pattern of Flow-volume Curve
Convex pattern (n = 93) | Non-convex pattern (n = 37) | p value | |
|---|---|---|---|
Total lung area, L | 3.52 (2.92–4.20) | 3.56 (3.09–4.18) | 0.630 |
HA, ml | 115 (56–173) | 93 (46–132) | 0.247 |
%HA, % | 3.2 (1.4–5.9) | 2.7 (1.2–4.2) | 0.263 |
sLAA, ml | 207 (103–372) | 227 (135–424) | 0.191 |
%sLAA, % | 5.9 (3.2–8.8) | 6.0 (4.3–9.9) | 0.150 |
Upper/peripheral %HA, % | 2.1 (0.8–4.3) | 1.4 (0.7–2.6) | 0.095 |
Upper/central %HA, % | 0.2 (0.0–0.6) | 0.1 (0.0–0.2) | 0.293 |
Lower/peripheral %HA, % | 5.7 (3.2–9.5) | 5.6 (2.8–7.6) | 0.364 |
Lower/central %HA, % | 1.2 (0.2–3.5) | 0.9 (0.3–3.0) | 0.716 |
Upper/peripheral %sLAA, % | 6.7 (3.9–9.7) | 7.5 (5.4–12.0) | 0.103 |
Upper/central %sLAA, % | 7.0 (4.2–11.2) | 8.5 (5.2–14.4) | 0.153 |
Lower/peripheral %sLAA, % | 4.7 (2.4–7.5) | 5.2 (3.3–7.7) | 0.260 |
Lower/central %sLAA, % | 5.1 (2.8–8.2) | 6.0 (3.7–9.5) | 0.158 |