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Table 2 Agreement for presence of selected comorbidities between medical chart and administrative data

From: (Dis)concordance of comorbidity data and cancer status across administrative datasets, medical charts, and self-reports

  Comorbidity Medical chart data n, (%) Administrative data n, (%) Percentage agreement %, (95% CI) κ statistic (95% CI)
Data available for all six study sites (n = 201) Myocardial infarction
Congestive heart failure
6 (3.0) 0 (0) 97 (95–99) 0 (0–0)
Diabetes without chronic complications
Diabetes with chronic complications
21 (10.5) 17 (8.5) 94 (90–97) 0.61 (0.42–0.81)
Mild liver disease
Moderate or severe liver disease
3 (1.5) 1 (0) 99 (97–100) 0 (0–0)
Any malignancya
Metastatic solid tumour
201 (100) 201 (100) NC NC
Rheumatic diseaseb 4 (2.0) (0) 98 (96–100) (0–0)
Ulcer or stomach disease 3 (1.5) 0 (0) 99 (97–100) 0 (0–0)
Renal disease 4 (2.0) 1 (0.5) 98 (95–100) −0.01 (−0.02–0.00)
Chronic pulmonary disease 26 (12.9) 0 (0) 88 (83–92) 0 (0–0)
Hemiplegia 0 (0) 0 (0) NC NC
AIDS/HIV 0 (0) 0 (0) NC NC
Peripheral vascular disease 1 (0.5) 0 (0) 100 (99–100) 0 (0–0)
Dementia 0 (0) 0 (0) NC NC
Cerebrovascular disease 5 (2.5) 0 (0) 98 (96–100) 0 (0–0)
Data available for all sites except site 1 (n = 172) High blood pressure 81 (47.1) 72 (41.9) 87 (81–92) 0.73 (0.63–0.83)
Anaemia or other blood disease 7 (4.1) 9 (5.2) 93 (89–97) 0.21 (−0.08–0.51)
Depression 6 (3.5) 0 (0) 97 (94–99) 0 (0–0)
Back pain 7 (4.1) 0 (0) 96 (93–99) 0 (0–0)
Osteoarthritis/ degenerative arthritis 17 (9.9) 9 (5.2) 93 (89–97) 0.50 (0.26–0.75)
  Total count 392 310   
  1. NC not calculable (prevalence was either 0% or 100%)
  2. aincludes leukaemia and lymphoma
  3. bsame as connective tissue disorders