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Table 2 Correlation between multimorbidity dummies used, describing the overlap of patients selected in each grouping, where 1 implies a perfect overlap (i.e. all patients identified positively by both multimorbidity conceptualisations being compared) and lower values imply less overlap (i.e. fewer of the same patients identified positively by both multimorbidity conceptualisations being compared)

From: Does the impact of case management vary in different subgroups of multimorbidity? Secondary analysis of a quasi-experiment

Multimorbidity Conceptualisation Mental/physical condition 3 + conditions Discordant comorbidities Cardiovascular/metabolic cluster Mental health-associated cluster Musculoskeletal disorder cluster Charlson >5
Mental/physical condition 1.00       
3 + conditions 0.32 1.00      
Discordant comorbidities 0.45 0.65 1.00     
Cardiovascular/metabolic cluster −0.19 −0.28 −0.37 1.00    
Mental health-associated cluster −0.01 −0.30 −0.16 −0.10 1.00   
Musculoskeletal disorder cluster −0.03 −0.07 −0.08 0.08 0.16 1.00  
Charlson >5 −0.02 0.01 −0.02 −0.17 −0.16 −0.03 1.00