Fig. 1

Kaplen-Meier survival curve of significant factors of burn mortality. A Age. B ICU admission. C Total body surface area (TBSA) > 20%. D the respiratory SOFA score (The blue drawn curve for 0–1 points, PF > 300 mmHg; The green drawn curve for 2 point, PF = 200–300 mmHg; The red drawn curve for 3–4 points, PF < 200 mmHg + mechanical ventilation)