Table 6 Comparison of Radiological Features Between Concave Pattern and Non-concave Pattern of Flow-volume Curve
Concave pattern (n = 72) | Non-concave pattern (n = 58) | p value | |
|---|---|---|---|
Total lung area, L | 3.60 (3.16–4.28) | 3.47 (2.81–4.04) | 0.161 |
HA, ml | 83 (44–151) | 118 (75–187) | 0.017 |
%HA, % | 2.4 (1.2–4.1) | 3.5 (2.1–6.5) | 0.009 |
sLAA, ml | 205 (119–363) | 220 (73–418) | 0.881 |
%sLAA, % | 5.9 (3.7–8.0) | 6.0 (2.9–11.0) | 0.815 |
Upper/peripheral %HA, % | 1.2 (0.6–2.9) | 2.4 (1.2–5.2) | 0.001 |
Upper/central %HA, % | 0.1 (0.0–0.3) | 0.2 (0.0–0.7) | 0.048 |
Lower/peripheral %HA, % | 4.6 (2.8–7.6) | 6.6 (4.2–10.2) | 0.029 |
Lower/central %HA, % | 0.7 (0.2–2.3) | 1.7 (0.5–4.0) | 0.022 |
Upper/peripheral %sLAA, % | 6.8 (4.5–9.8) | 6.5 (3.8–11.2) | 0.538 |
Upper/central %sLAA, % | 7.2 (4.7–11.2) | 7.6 (3.6–12.7) | 0.687 |
Lower/peripheral %sLAA, % | 4.6 (2.9–7.1) | 5.1 (2.5–8.7) | 0.558 |
Lower/central %sLAA, % | 4.9 (3.4–7.6) | 6.0 (2.6–10.1) | 0.579 |