Table 7.
Assessment results of algorithm 9, using diagnosis according to the ICHD-3 criteria as true.
| Category | Algorithm 9 | ICHD-3 | PPV (%) | Sensitivity (%) | Specificity (%) | NPV (%) | |
|---|---|---|---|---|---|---|---|
| Yes | No | ||||||
| Men (N = 15,802) | Yes | 9 | 43 | 17.3 | 3.3 | 99.7 | 98.3 |
| Total | 272 | 15,530 | |||||
| Women (N = 5,678) | Yes | 28 | 34 | 45.2 | 6.7 | 99.4 | 93.0 |
| Total | 419 | 5,259 | |||||
| 19–29 years (N = 1,151) | Yes | 2 | 1 | 66.7 | 3.3 | 99.9 | 94.9 |
| Total | 60 | 1,091 | |||||
| 30–39 years (N = 2,944) | Yes | 8 | 11 | 42.1 | 4.3 | 99.6 | 94.0 |
| Total | 184 | 2,760 | |||||
| 40–49 years (N = 6,095) | Yes | 19 | 27 | 41.3 | 7.3 | 99.5 | 96.0 |
| Total | 262 | 5,833 | |||||
| 50–59 years (N = 8,265) | Yes | 7 | 31 | 18.4 | 4.0 | 99.6 | 98.0 |
| Total | 175 | 8,090 | |||||
| ≥60 years (N = 3,025) | Yes | 1 | 7 | 12.5 | 10.0 | 99.8 | 99.7 |
| Total | 10 | 3,015 | |||||
ICHD-3, International Classification of Headache Disorders, version 3; NPV, negative predictive value; PPV, positive predictive value.