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Relationship with cognitive impairment
| Property | WMC | GCA | MTA |
|---|---|---|---|
| sensitivity | 68 % | 40 % | 39 % |
| specificity | 79 % | 71 % | 79 % |
| positive predictive value | 92 % | 91 % | 91 % |
| negative predictive value | 28 % | 18 % | 18 % |
Properties of abnormal results on the three visual rating scales when compared to cognitive impairment, defined as having at least one abnormal cognitive test result (MMSE < 24 points or CDT < 4 points)
