Out-of-hospital endotracheal intubation (OOH‑ETI) has been associated with adverse outcomes in trauma patients, though the influence of transport distance remains unclear. This study examined whether injury distance from the hospital modifies the relationship between OOH‑ETI and mortality. We conducted a retrospective cohort analysis of trauma patients aged >14 years transported to two Level I trauma centers between 2000 and 2003. Geographic data were used to calculate transport distance. To account for nonrandom selection of OOH‑ETI, propensity score–adjusted multivariable logistic regression was employed to evaluate the interaction between transport distance and OOH‑ETI on in-hospital mortality, incorporating non-linear modeling and multiple imputation for missing data.
