35
Table 8. Three Validated Risk Models for Stroke
Risk Factor CHA
2
DS
2
-VASc ATRIA GARFIELD
Age ≥85 y 6
0.98
Age ≥75 y 2 5 0.59
Age 65–74 y 1 3 0.20
Female sex 1 1
Hypertension 1 0.16
Renal disease 1 0.35
Diabetes 1 1 0.21
Current smoking 0.48
Congestive heart
failure
1 1 0.23
Prior stroke or
transient ischemic
attack (TIA)
2 2–8* 0.80
Vascular disease 1 0.20
Dementia 0.51
Prior bleeding 0.30
Proteinuria 1
Low risk score 0 0–5 0–0.89
Intermediate risk
score
1 6 0.90–1.59
High risk score ≥2 7–15 ≥1.60
C-index (11) 0.63 0.66 —
C-index (13) 0.67 — 0.71
* 8 points if age <65 y; 2 points if age 75–84 y; and 3 points if ≥85 y.
