Cross tabulation of the clinical and pathological diagnoses reclassifying cases with changes consistent with Alzheimer’s disease and any amount of infarction as mixed dementia
| Clinical diagnosis | Pathological diagnosis | Totals (n (%)) | Positive predictive value (%) | ||||
|---|---|---|---|---|---|---|---|
| Pure Alzheimer’s | Vascular dementia | Mixed Alzheimer’s and vascular dementia | Other dementia | ||||
| Alzheimer’s | 41 | 1 | 15 | 37 | 94 (77) | 44 | |
| Vascular dementia | 0 | 1 | 1 | 0 | 2 (2) | ||
| Mixed dementia | 4 | 3 | 6 | 4 | 17 (14) | ||
| Other dementia | 2 | 0 | 0 | 7 | 9 (7) | ||
| Totals (n (%)) | 47 (39) | 5 (4) | 22 (18) | 48 (39) | 122 (100) | ||