Table 3. Agreement of asthma cases and non-cases classified by self-report, the Danish National Patient Register (DNPR) and the Register of Medicinal Product Statistics (RMPS).
Agreement among cases | Agreement among non-cases | |
Self-report vs. DNPR | 65% | 91% |
DNPR vs. Self-report | 31% | 98% |
Self-report vs. RMPS | 33% | 98% |
RMPS vs. Self-report | 86% | 77% |
DNPR vs. RMPS | 17% | 99% |
RMPS vs. DNPR | 90% | 72% |