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International Journal of Alzheimer’s Disease
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International Journal of Alzheimer’s Disease
/
2010
/
Article
/
Tab 2
/
Research Article
Combined Analysis of CSF Tau, A
42, A
1–42% and A
1–
% in Alzheimer's Disease, Dementia with Lewy Bodies and Parkinson's Disease Dementia
Table 2
Cutoff points, sensitivities, and specificities.
differential diagnosis
Parameter
cut off
sensitivity
specificity
Youden index
AUC
95%-CI
AD versus DLB
A
42/tau
1.163
80%
53%
0.33
0.664
0.483–0.845
A
1–42%
5.093
80%
100%
0.80
0.933
0.872–0.994
A
1–4
%
1.144
89%
87%
0.76
0.908
0.802–1.014
AD versus PDD
A
42/tau
1.450
91%
67%
0.58
0.775
0.630–0.919
A
1–42%
5.730
93%
86%
0.79
0.889
0.773–1.005
A
1–4
%
1.104
87%
43%
0.30
0.592
0.420–0.763
AD versus DLB and PDD
A
42/tau
1.450
91%
56%
0.47
0.728
0.610–0.747
A
1–42%
5.093
80%
92%
0.72
0.907
0.834–0.981
A
1–4
%
1.104
87%
61%
0.48
0.723
0.600–0.847
DLB versus PDD
A
42/tau
3.229
93%
43%
0.36
0.663
0.487–0.840
A
1–42%
8.855
80%
33%
0.13
0.597
0.395–0.799
A
1–4
%
1.244
80%
71%
0.51
0.810
0.667–0.952
DLB versus AD and PDD
A
42/tau
0.546
80%
26%
0.06
0.560
0.396–0.723
A
1–42%
5.198
87%
61%
0.59
0.765
0.658–0.871
A
1–4
%
1.144
87%
80%
0.67
0.877
0.769–0.985