Table 3.

Sensitivity and specificity

DiseaseRater 1Rater 2Rater 3Rater 4Mean
Values are percentages.
AD
Possible + probable
Sensitivity100909010095
Specificity7783877079
Positive predictive value5964695361
Negative predictive value100969610098
Probable
Sensitivity100606010080
Specificity7787907382
Positive predictive value5960675661
Negative predictive value100878710093.5
Progressive supranuclear palsy
Possible + probable
Sensitivity87.562.587.562.575
Specificity971001009798.5
Positive predictive value87.51001009796
Negative predictive value9791979495
Probable
Sensitivity755062.562.562
Specificity100100100100100
Positive predictive value100100100100100
Negative predictive value9490919191.5
Dementia with Lewy bodies
Possible + probable
Sensitivity2537.562.512.534
Specificity9791949494
Positive predictive value6750713355
Negative predictive value8485908185
Probable
Sensitivity00000
Specificity100100100100100
Positive predictive value
Negative predictive value
Frontotemporal lobe dementia
Sensitivity85100857185
Specificity10096969697
Positive predictive value1001001008696.5
Negative predictive value9497979495.5