APACHE ll scoring system is a determinant of disease severity in hospital setting. The scale takes into account various physiological and metabolic parameters in addition to age, gender, and comorbidities. APACHE ll score ranges from 0 (minimum) to 71 (maximum). The more the score, the more severe is the condition. Reference: https://reference.medscape.com/calculator/12/apache-ii#about-references Image via: https://www.researchgate.net/figure/APACHE-II-scoring-system-a_tbl1_26252643