Agreement between lay interviewers and an expert in the diagnosis of migraine by questionnaire
| Expert | |||
|---|---|---|---|
| Lay interviewers | No migraine | Migraine | Total |
| Values are numbers of subjects. Sensitivity 50.4%, specificity 96.6%, positive predictive value 85.5%, negative predictive value 57.0%. | |||
| No migraine | 85 | 64 | 149 |
| Migraine | 11 | 65 | 76 |
| Total | 96 | 129 | 225 |