Charlson Comorbidity Index

Morbidity

+ Age

Score = 0

Estimated mortality in subsequent year

Score = 0 (no comorbidity): 12% mortality
Score = 1–2 (minor or mild comorbidities): 26% mortality
Score = 3–4 (mild or severe comorbidities): 52% mortality
Score = ≥5 (severe comorbidities): 85% mortality