marginally significantp = 0.089
Interaction tests confirmed marginally significant heterogeneity in the association between EIT parameters and mortality by disease group (CV > 40% × disease group: p = 0.089; DVR < 0.4 × disease group: p = 0.076) and ventilatory mode (CV > 40% × ventilatory mode: p = 0.061; DVR < 0.4 × ventilatory mode: p = 0.058), suggesting that the prognostic significance of these parameters may be modulated by clinical context.