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. 2020 Jun 30;10(6):e038401. doi: 10.1136/bmjopen-2020-038401

Table 2.

Studies using each multimorbidity measure

Variable type Multimorbidity measure: number of studies
CCI Condition count CSS KTMI Heart failure and CKD versus
heart failure, CKD and diabetes
Categorical 6 4 1 1 1
Continuous 6 4 1 0 0

CCI, Charlson Comorbidity Index; CKD, chronic kidney disease; CSS, comorbidity severity score; KTMI, Kidney Transplant Morbidity Index.