This study confirms a U-shaped association between body mass index and burn-related mortality along with age, total burn surface area, full-thickness burns, and comorbidities as risk factors.

The study included 9,405 adult burn patients.

Univariate and multivariate analyses revealed that age, total burn surface area, full-thickness burns, and comorbidities were associated with increased mortality.

Sensitivity analysis showed similar results. However, a restricted cubic spline indicated a U-shaped relation between body mass index and burn-related mortality.

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