Charlson Comorbidity Index (age-adjusted)
Charlson Comorbidity Index (Charlson 1987 weights + 1994 age adjustment): 1/2/3/6-point comorbidities plus one point per decade over 50 (capped at 4).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Age
- 55 years
Result: Charlson age-adjusted 1 (comorbidity 0 + age 1). At a comorbidity score of 0, 1-year mortality in the 1987 development cohort was 12%.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Comorbidity score 0
- 1-year mortality 12% in the 1987 development cohort.
- Comorbidity score 1-2
- 1-year mortality 26%.
- Comorbidity score 3-4
- 1-year mortality 52%.
- Comorbidity score 5 or more
- 1-year mortality 85%.
- Age points
- From the 1994 adjustment; the 1987 rates are by comorbidity score alone, not the age-adjusted total.
What you enter
- Age
- Myocardial infarction (1)
- Congestive heart failure (1)
- Peripheral vascular disease (1)
- Cerebrovascular disease (1)
- Dementia (1)
- Chronic pulmonary disease (1)
- Connective tissue disease (1)
The other 12 fields
- Peptic ulcer disease (1)
- Mild liver disease (1)
- Diabetes, uncomplicated (1)
- Hemiplegia (2)
- Moderate or severe renal disease (2)
- Diabetes with end-organ damage (2)
- Any tumor within 5 years (2)
- Leukemia (2)
- Lymphoma (2)
- Moderate or severe liver disease (3)
- Metastatic solid tumor (6)
- AIDS (6)
How this is calculated
Citation
Charlson ME, Pompei P, Ales KL, MacKenzie CR. A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chronic Dis. 1987;40(5):373-383. Age adjustment: Charlson ME, et al. J Clin Epidemiol. 1994;47(11):1245-1251. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.