The final score included different age categories (≥75 years old, OR = 9.8; 95% CI 3.4–31.1), type of diabetes (OR = 74.1; 95% CI 5.3–11362), presence of hypertension (OR = 2.9; 95% CI 1.5–5.8), insulin treatment (OR = 3.8; 95% CI 1.9–8.1) and peripheral oxygen saturation (OR = 18.3 95% CI 8.2–47.1). Here, INS is linked to diabetes mellitus.