Skip to main content

Table 5 Comparison of Radiological Features Between Convex Pattern and Non-convex Pattern of Flow-volume Curve

From: Relationship of flow-volume curve pattern on pulmonary function test with clinical and radiological features in idiopathic pulmonary fibrosis

  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
  1. Data are presented as median (interquartile range)
  2. p values derived by Mann–Whitney U test
  3. %HA, computed-tomography-derived %honeycombing area; %sLAA, computed-tomography-derived %subtracted low attenuation area