. Author manuscript; available in PMC: 2018 Apr 1.

Published in final edited form as: J Am Geriatr Soc. 2017 Feb 15;65(4):712–720. doi: 10.1111/jgs.14539

Table 3.

Sensitivity, Specificity, and Likelihood Ratios of Different Definitions of Multiple Chronic Condition (MCC) Identifying Patients who Experienced 30-Day Hospital Readmissions

	≥2 CCW-Defined Conditions^a	≥2 CCI-Defined Conditions^a	≥2 ACG®-Defined Conditions^a	≥2 c-SNP-Defined Conditions^a
Sensitivity	95.4%	53.7%	32.7%	77.3%
Specificity	7.4%	65.5%	83.2%	39.2%
Positive Likelihood Ratio	1.0	1.6	1.9	1.3
Negative Likelihood Ratio	0.6	0.7	0.8	0.6

Chronic Condition Data Warehouse (CCW), Charlson Comorbidity Index (CCI), Johns Hopkins Adjusted Clinical Groups® (ACG®) Case-Mix System, Medicare Advantage Special Needs Plan Chronic Conditions (c-SNP)