Table 1 Prevalence and levels of agreement of comorbid conditions according to Self-report comorbidity questionnaire and medical records
From: A self-report comorbidity questionnaire for haemodialysis patients
Prevalence (%) | Level of agreement (%) | Kappa (95% CI) | Interpretation of Kappa | |||
|---|---|---|---|---|---|---|
Records | Self-report | Limiting | ||||
Diabetes | 84 (29.8) | 82 (29.1) | 22 (7.8) | 99 | 0.97 (0.93, 1.00) | Almost Perfect |
Heart disease | 98 (34.8) | 92 (32.6) | 37 (13.1) | 83 | 0.62 (0.52, 0.72) | Substantial |
Cancer | 20 (7.1) | 18 (6.4) | 3 (1.1) | 96 | 0.72 (0.55, 0.89) | Substantial |
Liver disease | 12 (4.3) | 7 (2.5) | 3 (1.1) | 97 | 0.51 (0.20, 0.83) | Moderate |
Arthritis | 22 (7.8) | 72 (25.5) | 47 (16.7) | 81 | 0.35 (0.09, 0.50) | Fair |
Lung disease | 29 (10.3) | 13 (4.6) | 8 (2.8) | 91 | 0.34 (0.10, 0.58) | Fair |
Cerebrovascular disease | 10 (3.5) | 22 (7.8) | 2 (0.7) | 93 | 0.34 (0.09, 0.56) | Fair |
Depression | 17 (6.0) | 35 (12.4) | 15 (5.3) | 88 | 0.29 (0.06, 0.51) | Fair |