Charlson Comorbidity Index: Difference between revisions

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The Charlson Index was developed in 1987 based on 1-year mortality data from internal medicine patients admitted to a single New York Hospital and was initially validated within a cohort of breast cancer patients. The index ~~encompasses 19 medical conditions weighted 1–6 with total scores ranging from 0–37. In the development phase of the index, mortality for each disease was converted to~~ a ~~relative risk~~ of death within 12 months. A weight was then assigned to each condition based on the relative risk (RR); for example, RR <1.2 = weight 0, RR ≥ 1.2<1.5 = weight 1, RR ≥ 1.5<2.5 = weight 2, RR ≥ 2.5<3.5 = weight 3, and for 2 conditions (metastatic solid tumor and AIDS) = weight 6. From the weighted conditions, a sum score can be tallied to yield the total comorbidity ~~score~~.

The Charlson Comorbidity index is a method of classifying prognostic comorbidity in longitudinal studies.

See article: [[:Image:Charlson ii article page 2 19 items with points.JPG | image or Charlson article, page 2]]. A PDF of the complete original article can be found on- X:\CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF

==Use of Charlson Comorbidity Index==

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The [[:Category: Charlson Comorbid Diagnosis | Charlson Comorbid Diagnosis]] codes have been mapped to the Critical Care/Medicine [[:Category: Diagnosis Coding | Diagnosis Coding]] Index which is stored in the [[S_AllDiagnoses]] list used in [[CCMDB.mdb]].

== Backgrond / further info ==

The Charlson Index was developed in 1987 based on 1-year mortality data from internal medicine patients admitted to a single New York Hospital and was initially validated within a cohort of breast cancer patients. The index encompasses 19 medical conditions weighted 1–6 with total scores ranging from 0–37. In the development phase of the index, mortality for each disease was converted to a relative risk of death within 12 months. A weight was then assigned to each condition based on the relative risk (RR); for example,

* RR <1.2 = weight 0,

* RR ≥ 1.2<1.5 = weight 1,

* RR ≥ 1.5<2.5 = weight 2,

* RR ≥ 2.5<3.5 = weight 3,

* and for 2 conditions (metastatic solid tumor and AIDS) = weight 6.

From the weighted conditions, a sum score can be tallied to yield the total comorbidity score.

See article: [[:Image:Charlson ii article page 2 19 items with points.JPG | image or Charlson article, page 2]]. A PDF of the complete original article can be found on- X:\CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF

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-The Charlson Index was developed in 1987 based on 1-year mortality data from internal medicine patients admitted to a single New York Hospital and was initially validated within a cohort of breast cancer patients. The index encompasses 19 medical conditions weighted 1–6 with total scores ranging from 0–37. In the development phase of the index, mortality for each disease was converted to a relative risk of death within 12 months. A weight was then assigned to each condition based on the relative risk (RR); for example, RR <1.2 = weight 0, RR ≥ 1.2<1.5 = weight 1, RR ≥ 1.5<2.5 = weight 2, RR ≥ 2.5<3.5 = weight 3, and for 2 conditions (metastatic solid tumor and AIDS) = weight 6.  From the weighted conditions, a sum score can be tallied to yield the total comorbidity score.
+The Charlson Comorbidity index is a method of classifying prognostic comorbidity in longitudinal studies.
-See article: [[:Image:Charlson ii article page 2 19 items with points.JPG | image or Charlson article, page 2]].  A PDF of the complete original article can be found on- X:\CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF
 ==Use of Charlson Comorbidity Index==
@@ Line 14: / Line 12: @@
 The [[:Category: Charlson Comorbid Diagnosis | Charlson Comorbid Diagnosis]] codes have been mapped to the Critical Care/Medicine [[:Category: Diagnosis Coding | Diagnosis Coding]] Index which is stored in the [[S_AllDiagnoses]] list used in [[CCMDB.mdb]].
+== Backgrond / further info ==
+The Charlson Index was developed in 1987 based on 1-year mortality data from internal medicine patients admitted to a single New York Hospital and was initially validated within a cohort of breast cancer patients. The index encompasses 19 medical conditions weighted 1–6 with total scores ranging from 0–37. In the development phase of the index, mortality for each disease was converted to a relative risk of death within 12 months. A weight was then assigned to each condition based on the relative risk (RR); for example,
+* RR <1.2 = weight 0,
+* RR ≥ 1.2<1.5 = weight 1,
+* RR ≥ 1.5<2.5 = weight 2,
+* RR ≥ 2.5<3.5 = weight 3,
+* and for 2 conditions (metastatic solid tumor and AIDS) = weight 6.
+From the weighted conditions, a sum score can be tallied to yield the total comorbidity score.
+See article: [[:Image:Charlson ii article page 2 19 items with points.JPG | image or Charlson article, page 2]].  A PDF of the complete original article can be found on- X:\CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF