Figure 3

Comparison of vertical lung lengths (VLLs) between patients with IIPs and controls. VLLs in the exploratory (A–D) and validation cohorts (E–H). Mild and moderate/severe idiopathic interstitial pneumonias (IIPs) were defined as patients with %predicted forced vital capacity ≥ 80% and < 80%, respectively. White, black, light grey, and grey boxes represent controls, all patients with IIPs, mild IIPs, and moderate/severe IIPs, respectively.