Figure.

Platelet responses by aggregometry in Bruneck Study participants. A, Light transmission aggregometry (LTA) determination of % final aggregation at 6 min in response to arachidonic acid (AA; 1 mmol/L), ADP (5 μmol/L), ADP (20 μmol/L), collagen (0.4 μg/mL), collagen (4 μg/mL), collagen (10 μg/mL), TRAP-6 amide (25 μmol/L), and U46619 (10 μmol/L) compared with age (n=139–184) or (B) 10-y cardiovascular risk by FHS (Framingham Heart Study) risk score (n=137–181) measured in the absence of aspirin use. r indicates the correlation between final aggregation and age or FHS risk score using Spearman correlation.