Table 2. Conditional distributions of asthma cases and non-cases classified by self-report, the Danish National Patient Register (DNPR) and the Registry of Medicinal Product Statistics (RMPS).
Yes/Yes | No/No | Yes/No | No/Yes | Kappa | |
Self-report/DNPR | 2,023 | 46,122 | 4,401 | 1,091 | 0.38 |
RMPS/Self-report | 5,499 | 36,209 | 925 | 11,004 | 0.37 |
DNPR/RMPS | 5,211 | 62,867 | 650 | 24,888 | 0.21 |