Hypothesis | 3 criteria | 4 criteria | 5 criteria |
---|---|---|---|
↓ LOC ?s* | Arm weakness | ↓ LOC ?s | ↓ LOC ?s |
Leg weakness | Leg weakness | Leg weakness | Facial weakness |
Neglect | Dysarthria | Dysarthria | Arm weakness |
Gaze | Gaze | Sensation loss | |
Aphasia | |||
Sensitivity | |||
85% | 92% | 96% | 99% |
Specificity | |||
45% | 44% | 39% | 28% |
NPV | |||
93% | 96% | 98% | 99% |
PPV | |||
26% | 28% | 27% | 25% |
*↓LOC ?s, decreased level of consciousness with inability to answer questions.
NPV, negative predictive value; PPV, positive predictive value.