“…In addition to age, which is a universal strong and unmodifiable risk factor for mortality in men and women 1 – 18 , additional risk factors have been identified for selected diseases, such as heart failure (CHF) 5 , 19 , 20 , sepsis and acute and chronic pulmonary diseases 3 , 6 , 9 , 14 , surgery 8 , 10 , hip fractures 17 , and stroke 6 , 7 , 12 . For instance, in CHF and hip fracture, male sex is important 5 , 17 ; in the elderly, pre-admission conditions are a major risk factor for long-term mortality, as well as admission to an intensive care unit (ICU), type of admission (emergency vs. elective), presence of comorbidities, diabetes, and chronic kidney disease 1 , 2 , 4 , 9 , 11 , 13 , 15 , 18 , 20 . In patients with acute and chronic pulmonary diseases, male sex, comorbidities, long in-stay, creatinine, and albumin are risk factors 3 , 6 , 9 , 14 .…”