Defined in 1948,
in an early paper on nitrogen mustards.
100% is completely healthy, 0% is dead, 10% is mostly dead.
(MDCalc)
ECOG Performance Status
Defined in 1982
by the Eastern Cooperative Oncology Group,
a simplified version of Karnofsky. 0 is completely healthy, 5 is dead, 2.5 is the VA special.
(MDCalc)
Charlson Comorbidity Index CCI
Defined in 1987, somewhat out of date (e.g. "AIDS" gets 6 points by itself), but among the more useful standardized measures of biological (rather than chronological) age.
(MDCalc)
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