Table 3 Sensitivity, specificity and kappa value of questionnaire-based headache diagnosis
From: The validity of questionnaire-based diagnoses: the third Nord-Trøndelag Health Study 2006–2008
Diagnosis | Sensitivity | Specificity | Kappa | |||
|---|---|---|---|---|---|---|
na (%) | 95% CI | nb (%) | 95% CI | Value | 95% CI | |
Headache suffering | 80/91 (88) | 84–92 | 168/196 (86) | 82–90 | 0.70 | 0.61–0.79 |
Chronic headache | 11/16 (69) | 62–74 | 266/268 (99) | 98–100 | 0.75 | 0.56–0–94 |
MOH | 3/4 (75) | 70–80 | 282/283 (100) | 99–100 | 0.75 | 0.30–1.00 |
TTH ≥ 1 day/month | 48/50 (96) | 94–98 | 146/212 (69) | 63–75 | 0.44 | 0.30–0.58 |
Chronic TTH without medication-overuse | 7/11 (64) | 58–70 | 231/232 (100) | 99–100 | 0.73 | 0.49–0.97 |
Self-reported migraine | 13/37 (35) | 29–41 | 228/233 (98) | 96–100 | 0.42 | 0.22–0.64 |
Migraine (restrictive) | 19/37 (51) | 45–57 | 224/236 (95) | 92–98 | 0.50 | 0.32–0.68 |
Migraine ≥1 day/month (restrictive) | 19/33 (58) | 52–64 | 233/245 (91) | 88–94 | 0.54 | 0.37–0.71 |
Migraine with visual aura | 6/12 (50) | 44–56 | 258/266 (95) | 93–97 | 0.44 | 0.38–0.50 |
Migraine ≥1 day/month (liberal) | 22/33 (67) | 61–73 | 230/245 (94) | 91–97 | 0.58 | 0.42–0.74 |
Migraine (liberal Hunt2) | 18/37 (49) | 45–53 | 227/236 (96) | 94–98 | 0.51 | 0.34–0.68 |