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Validity of self-reported influenza and pneumococcal vaccination status
| Self-report | Immunization registry | Percent agreement | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|---|---|---|
| Vaccinated | Unvaccinated | ||||||
| Influenza | |||||||
| Vaccinated | 147 | 5 | 96.5 | 98.7 | 90.2 | 96.7 | 95.8 |
| Unvaccinated | 2 | 46 | |||||
| Pneumococcal | |||||||
| Vaccinated | 106 | 4 | 84.0 | 83.5 | 86.2 | 96.4 | 54.3 |
| Unvaccinated | 21 | 25 | |||||
PPV positive predictive value; NPV negative predictive value
