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 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. | ||
==Use of Charlson Comorbidity Index== | |||
*The number of comorbid conditions is used to provide an indication of health status and risk of death. The more comorbid conditions the higher risk for bad outcome. | |||
*Comorbidity and their associated weights provide an overall comorbidity score to reflect the cumulative increased likihood of one year mortality. | |||
*Use for[[:Category: MOST | MOST]] score for Medicine | |||
*Use for [[APACHE II]] score for Critical Care | |||
[[Category: Comorbid]] | [[Category: Comorbid]] | ||
Revision as of 17:18, 22 December 2010
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.
Use of Charlson Comorbidity Index
- The number of comorbid conditions is used to provide an indication of health status and risk of death. The more comorbid conditions the higher risk for bad outcome.
- Comorbidity and their associated weights provide an overall comorbidity score to reflect the cumulative increased likihood of one year mortality.