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Table 2 Additional Charlson index comorbidities inferred from drug prescribing information (N = 247,712)

From: The predictability of claim-data-based comorbidity-adjusted models could be improved by using medication data

Comorbidities Claim data1(A) Prescribing information2(B) Claim data ∩ Prescribing information3(A∩B) Fraction of additional comorbidities inferred by prescribing information {(AB)-A}/(AB)
Peripheral vascular disease 6,707 21,858 2,452 74.3%
Congestive heart failure 4,531 4,159 946 41.5%
Chronic pulmonary disease 30,656 36,129 16,517 39.0%
Renal disease 8,298 1,054 400 7.3%
Cerebrovascular disease 8,196 638 153 5.6%
AIDS 51 10 8 3.8%
Connective tissue disease/rheumatic disease 2,727 114 72 1.5%
Dementia 3,811 261 216 1.2%
  1. 1 No. of cases of each Charlson index comorbidity identified from claim data, 2 No. of cases each Charlson index comorbidity inferred from drug prescribing information, 3 No. cases of each Charlson index comorbidity identified (or inferred) both claim data and drug prescribing information.