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Validity of family member report on headache diagnosis (interview as gold standard)
| Any Headache | Migraine | Tension-type | |
|---|---|---|---|
| Sensitivity (95% CI) | 56.2 (53.0 – 59.4) | 38.6 (35.5 – 41.7) | 6.1 (4.6 – 7.6) |
| Specificity (95% CI) | 85.1 (82.8 – 87.4) | 96.8 (95.7 – 97.9) | 96.5 (95.3 – 97.7) |
| Kappa (95% CI) | 0.38 (0.32 – 0.43) | 0.38 (0.33 – 0.43) | 0.04 (−0.02 – 0.09) |
| PPV (95% CI) | 84.9 (82.6 – 87.2) | 90.0 (88.1 – 91.9) | 29.7 (26.7 – 32.7 ) |
| NPV (95% CI) | 57.1 (53.9 – 60.3) | 67.6 (64.6 – 70.6) | 80.8 (78.3 – 83.3) |
