Charlson Comorbidity Index

Charlson Comorbidity Index [comment memo="select findings below:"]
[select name="Age" value="LESS THAN 50 (0 points)=0|51 TO 60 (1 point)=1|61 TO 70 (2 points)=2|71 TO 80 (2 points)=3|81 and above (4 points)=4"] <-- Age
[select name="MI" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Myocardial Infarction
[select name="CHF" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Congestive Heart Failure
[select name="PVD" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Peripheral Vascular Disease
[select name="CVD" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Cerebrovascular Disease
[select name="Hemiplegia" value="ABSENT (0 points)=0|PRESENT (2 points)=2"] <-- Hemiplegia
[select name="Dementia" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Dementia
[select name="Pulmonary" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Chronic Pulmonary Disease
[select name="Tissue" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Connective Tissue Disease
[select name="Ulcer" value="ABSENT (0 points)=0|PRESENT (1 point)=1"] <-- Peptic Ulcer Disease
[select name="Liver" value="ABSENT (0 points)=0|MILD (1 point)=1|MODERATE TO SEVERE (3 points)=3"] <-- Liver Disease (Mild = cirrhosis without portal hypertension or chronic hepatitis; Moderate to Severe = cirrhosis with portal hypertension with or without variceal bleeding)
[select name="Diabetes" value="ABSENT (0 points)=0|UNCOMPLICATED (1 point)=1|END ORGAN DAMAGE (2 points)=2"] <-- Diabetes Mellitus
[select name="Renal" value="ABSENT (0 points)=0|PRESENT (2 points)=2"] <-- Moderate to Severe Renal Disease (creatinine > 3, dialysis, kidney transplant history, or uremia)
[select name="Tumor" value="ABSENT (0 points)=0|PRESENT (2 points)=2|METASTATIC (6 points)=6"] <-- Tumor
[select name="Leukemia" value="ABSENT (0 points)=0|PRESENT (2 points)=2"] <-- Leukemia
[select name="Lymphoma" value="ABSENT (0 points)=0|PRESENT (2 points)=2"] <-- Malignant Lymphoma
[select name="AIDS" value="ABSENT (0 points)=0|PRESENT (6 points)=6"] <-- AIDS
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Results:
Score:  [calc value="score0=(Age)+(MI)+(CHF)+(PVD)+(CVD)+(Hemiplegia)+(Dementia)+(Pulmonary)+(Tissue)+(Ulcer)+(Liver)+(Diabetes)+(Renal)+(Tumor)+(Leukemia)+(Lymphoma)+(AIDS)" memo="number"]

12 month mortality (does not utilize age and is based on 1996 article):  [calc value="score=(MI)+(CHF)+(PVD)+(CVD)+(Hemiplegia)+(Dementia)+(Pulmonary)+(Tissue)+(Ulcer)+(Liver)+(Diabetes)+(Renal)+(Tumor)+(Leukemia)+(Lymphoma)+(AIDS);score>6?'Extremely High (37.12 percent)':score>4?'Very High (32.55 percent)':score>2?'High (19.27 percent)':score>0?'Medium (10.14 percent)':'Low (3.05 percent)'" memo="score interpretation"]

10 year survival (utilizes age and is based on 1994 article): [calc value="score=(100*(Math.pow(.983,(Math.exp(((Age)+(MI)+(CHF)+(PVD)+(CVD)+(Hemiplegia)+(Dementia)+(Pulmonary)+(Tissue)+(Ulcer)+(Liver)+(Diabetes)+(Renal)+(Tumor)+(Leukemia)+(Lymphoma)+(AIDS))*0.9))))).toFixed(2)" memo="score interpretation"] percent

[checkbox memo="hide references" name="footnotes" value=""][conditional field="footnotes" condition="(footnotes).isNot('')"]
References:
[link url="http://www.fpnotebook.com/prevent/Exam/ChrlsnCmrbdtyIndx.htm" memo="#1"] FPNotebook Page
[link url="http://www.ncbi.nlm.nih.gov/pubmed/3558716" memo="#2"] Original article: Charlson (1987) J Chronic Dis 40: 373-83
[link url="http://www.ncbi.nlm.nih.gov/pubmed/8991959" memo="#3"] A validation (used for 12 month mortality rate): D'Hoore (1996) J Clin Epidemiol 49:1429-33
[link url="http://www.ncbi.nlm.nih.gov/pubmed/7722560" memo="#4"] A validation (used for 10 year survival rate): Charlson (1994) J Clin Epidemiol 47:1245-51
[link url="http://www.ncbi.nlm.nih.gov/pubmed/22412005" memo="#5"] Huntley (2012) Ann Fam Med 10:134-41[/conditional]