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Table 3 Agreement for presence of selected comorbidities between medical chart and self-reported comorbidity questionnaire (SCQ) (n = 121)

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

Comorbidity Medical chart Present, n (%) SCQ data Present, n (%) Percentage agreement
%, (95% CI)
κ statistic
(95% CI)
Heart disease 2 (1.6) 9 (7.4) 93 (88–97) 0.16 (−0.15–0.46)
Diabetes 9 (7.4) 10 (8.3) 96 (92–99) 0.71 (0.47–0.96)
Liver disease 1 (0.8) 1 (0.8) 98 (96–100) −0.01 (− 0.02–0.00)
Cancer 121 (100) 31 (25.6) 26 (18–34) 0 (0–0)
Rheumatic diseasea 2 (1.7) 7 (5.8) 94 (90–98) 0.20 (−0.16–0.57)
Ulcer or stomach disease 1 (0.8) 4 (3.3) 96 (92–99) −0.01 (− 0.04–0.01)
Renal disease 3 (2.5) 1 (0.8) 97 (93–100) −0.01 (− 0.03–0.01)
Chronic pulmonary disease 12 (9.9) 5 (4.1) 91 (86–96) 0.31 (0.01–0.61)
High blood pressure 56 (46.3) 51 (42.2) 84 (78–91) 0.68 (0.55–0.81)
Anaemia or other blood disease 6 (5.0) 3 (2.5) 96 (92–99) 0.43 (0.01–0.84)
Depression 6 (5.0) 17 (14.1) 88 (82–94) 0.30 (0.04–0.55)
Back pain 4 (3.3) 38 (31.4) 72 (64–80) 0.14 (0.01–0.27)
Osteoarthritis/degenerative arthritis 14 (11.6) 26 (21.5) 75 (67–83) 0.12 (−0.08–0.31)
Total count 237 203   
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