Table 2.
The criterion validity of the questionnaire: the correlations of the items, dimensions and total score of the instrument with the clinical characteristics
| Item or score | Group | Frequency of headache attacks (in the last 3 months) | Headache severity (VAS) | Mean attack length (min) | Disease length (years) |
|---|---|---|---|---|---|
| 1. Work performance | ALL | −0.467 | −0.527 | −0.242 | −0.207 |
| 2. Household chores | ALL | −0.487 | −0.547 | −0.237 | −0.168 |
| 3. Social life | ALL | −0.502 | −0.528 | −0.279 | −0.217 |
| 4. Leisure activities | ALL | −0.491 | −0.550 | −0.323 | −0.247 |
| 5. Vacations/awaydays | ALL | −0.496 | −0.522 | −0.273 | −0.167 |
| 6. Physical health | ALL | −0.537 | −0.520 | −0.285 | −0.261 |
| 7. Appearance | ALL | −0.400 | −0.477 | −0.208 | −0.128 |
| 8. Relationship with other family members | ALL | −0.391 | −0.440 | −0.213 | −0.164 |
| 9. Sexual life | ALL | −0.379 | −0.414 | −0.258 | −0.223 |
| 10. Sleep | ALL | −0.458 | −0.461 | −0.234 | −0.048 |
| 11. Energy | ALL | −0.453 | −0.552 | −0.333 | −0.148 |
| 12. Mood | ALL | −0.424 | −0.526 | −0.278 | −0.126 |
| 13. Memory | ALL | −0.354 | −0.304 | −0.157 | −0.076 |
| 14. Concentration | ALL | −0.463 | −0.427 | −0.235 | −0.084 |
| 15. Thinking | ALL | −0.470 | −0.407 | −0.210 | −0.065 |
| 16. General health perceptions | ALL | −0.382 | −0.458 | −0.181 | −0.137 |
| 17. Irritability | ALL | −0.441 | −0.486 | −0.246 | −0.279 |
| 18. Frustration | ALL | −0.438 | −0.481 | −0.327 | −0.197 |
| 19. Abortive medication use | ALL | −0.397 | −0.520 | −0.311 | −0.258 |
| 20. Financial situation | ALL | −0.281 | −0.305 | −0.144 | −0.084 |
| 21. Embarrassment due to headaches | ALL | −0.155 | −0.143 | −0.002 | 0.036 |
| 22. Worries about headache | ALL | −0.530 | −0.587 | −0.290 | −0.142 |
| 23. Life enjoyment | ALL | −0.450 | −0.565 | −0.280 | −0.118 |
| Physical score | ALL | −0.558 | −0.615 | −0.313 | −0.221 |
| TTH | −0.567 | −0.575 | −0.299 | −0.160 | |
| Migraine | −0.138 | −0.614 | −0.040 | −0.143 | |
| Mental score | ALL | −0.577 | −0.606 | −0.337 | −0.176 |
| TTH | −0.569 | −0.578 | −0.319 | −0.112 | |
| Migraine | −0.253 | −0.471 | −0.111 | −0.037 | |
| Social score | ALL | −0.542 | −0.572 | −0.314 | −0.193 |
| TTH | −0.541 | −0.555 | −0.307 | −0.158 | |
| Migraine | −0.197 | −0.511 | −0.079 | −0.059 | |
| Total score | ALL | −0.584 | −0.628 | −0.337 | −0.206 |
| TTH | −0.586 | −0.599 | −0.324 | −0.146 | |
| Migraine | −0.187 | −0.577 | −0.015 | −0.044 |
* ALL, whole sample, TTH, subgroup of patients with tension-type headache; Migraine, subgroup of patients with migraine; values of Spearman’s correlation coefficients given in italic are significant (p < 0.05)