Table 2.
Estimating Population-Level Stroke/TIAs Diagnoses
| Age Group | Year | Neuro RFVs (Thousands) |
Stroke/TIA Prevalence (%) |
True Positive Stroke/TIAs a (Thousands) |
False Positive Stroke/TIAs b (Thousands) |
Total Stroke/TIA Diagnoses (Thousands) |
|---|---|---|---|---|---|---|
| Young | 1995 | 3300 | 1.0% | 33 | 33 | 66 |
| 2015 | 5300 | 0.6% | 32 | 53 | 84 | |
| Change | −3% | 61% | 27% | |||
| Older Adults | 1995 | 2000 | 18% | 360 | 16 | 376 |
| 2015 | 3000 | 9% | 270 | 27 | 297 | |
| Change | −25% | 69% | −21% |
aTrue Positives = Number of Neuro RFVs x Stroke/TIA Prevalence
bFalse Positives = Number of Neuro RFVs x (1 - Specificity) x (1 - Stroke/TIA Prevalence)
Specificity of Stroke/TIA diagnosis = 99%