Table 4.
ROC Curve Area Values for MFV of Insonated Arteries in Subjects with AD and NDC
| Insonated Artery |
ROC Curve Area |
Standard Error |
P Value | Sample Size - AD |
Sample Size - NDC |
MFV Cut Off (cm/sec) |
Sensitivity (%) |
Specificity (%) |
|---|---|---|---|---|---|---|---|---|
| RdMCA | 0.76 | 0.05 | < 0.001 | 36 | 47 | 29.5 | 89.4 | 61.1 |
| LICA | 0.76 | 0.05 | < 0.001 | 41 | 48 | 27.5 | 77.1 | 61.0 |
| RICA | 0.72 | 0.06 | < 0.001 | 41 | 49 | 30.5 | 61.2 | 78.1 |
| RpMCA | 0.71 | 0.06 | < 0.001 | 39 | 48 | 38.5 | 56.3 | 76.9 |
| LPCA | 0.70 | 0.06 | < 0.001 | 34 | 42 | 30.5 | 50.0 | 82.4 |
| dBA | 0.69 | 0.06 | < 0.001 | 36 | 49 | 28.5 | 65.3 | 63.9 |
| Lsiph | 0.68 | 0.06 | < 0.001 | 40 | 49 | 32.5 | 40.8 | 85.0 |
| LdMCA | 0.68 | 0.06 | 0.01 | 34 | 44 | 35.5 | 59.1 | 76.5 |
| LACA | 0.67 | 0.06 | 0.01 | 35 | 44 | 35.5 | 63.6 | 68.6 |
| Rsiph | 0.66 | 0.06 | 0.01 | 40 | 48 | 28.5 | 66.7 | 65.0 |
| LpMCA | 0.66 | 0.06 | 0.01 | 38 | 47 | 35.5 | 59.6 | 71.1 |
| RACA | 0.63 | 0.06 | 0.04 | 38 | 47 | 30.5 | 70.2 | 57.9 |
| RPCA | 0.63 | 0.06 | 0.04 | 34 | 45 | 30.5 | 57.8 | 76.5 |
| LVA | 0.62 | 0.06 | 0.05 | 38 | 48 | 29.5 | 31.3 | 84.2 |
| pBA | 0.61 | 0.06 | 0.08 | 38 | 49 | 25.5 | 63.3 | 55.3 |
| RVA | 0.60 | 0.06 | 0.10 | 37 | 48 | 27.5 | 43.8 | 75.7 |
Abbreviations: ROC, receiver-operator characteristic; AD, Alzheimer’s disease; NDC, non-demented control; MFV, mean flow velocity. For insonated artery abbreviations, see footnote at end of Table 3.