| Clinical Diagnoses | Total |
---|
SMI Diagnoses | Migraine | No Migraine | Â |
---|
Migraine | 138 (a) | 5 (b) | 143 |
No Migraine | 20 (c) | 7 (d) | 27 |
Total | 158 | 12 | 170 |
- Sensitivity: a/(a+c) = 138/138+20 = 138/158 = 0.87
- Specificity: d/(b+d) = 7/5+7 = 7/12 = 0.58
- Misclassification rate: b+c/(a+b+c+d) = 5+20/(138+5+20+7) = 25/170 = 0.15
- Positive predictive value: a/(a+b) = 138/(138+5) = 138/143 = 0.97
- Negative predictive value: d/(c+d) = 7/(20+7) = 7/27 = 0.26