This retrospective, multicenter, registry-based cohort study used data from the Pan-Asian Trauma Outcomes Study registry between January 2016 and December 2024. Adult patients with fall-related trauma were included if they had available data on age, sex, emergency department vital signs, and 30-day mortality. The final cohort was randomly divided into derivation and validation cohorts in a 2:1 ratio. Candidate predictors were selected based on clinical relevance, field triage criteria, prior trauma literature, and early availability. Multivariable logistic regression was used to develop the model, and regression coefficients were converted into an integer-based score. Model performance was assessed using discrimination, calibration, Brier score, and threshold-based metrics.

Inclusion Criteria:

• Among patients with traumatic injuries recorded in the PATOS registry between January 2016 and December 2024, those with fall-related injuries were screened for eligibility.

Exclusion Criteria:

• Patients younger than 18 years and those with missing data on age, sex, ED vital signs, or 30-day mortality were excluded.

Among patients with traumatic injuries recorded in the PATOS registry between January 2016 and December 2024, those with fall-related injuries were screened for eligibility. Patients younger than 18 years and those with missing data on age, sex, ED vital signs, or 30-day mortality were excluded.