Carry the risk statistics to 3 decimal places, and then when they differ in two places point out it’s not statistically significant.
Measure with a micrometer, mark with chalk, cut with an axe???
Anyhow, aspirin sounds easier to treat with. No worrying about any interfering dietary components, i.e. Vitamin K. And a single accidental overdose is less likely to have lasting ill effects.
I pop an aspirin every other day, always with food just as a precautionary measure, although I have no history of heart problems.
Walking 18 holes 4 times weekly has kept my hypertension in check, my occasional arrhythmia caused by caffeine from coffee is in check, and my resting heart rate is in low 60’s.
At my age near 70, exercise beats every medication.
Interesting enough, the Doctor who was seeing me had me take an EKG to make sure I didn't have an irregular heartbeat. Seems that can also be a cause for clots as stated above.
I would personally stick with Warfarin to keep the blood properly thinned, but that's just a personal preference from my own experiences.
Another way the two drugs are similar is in price - a bottle of Coumadin from Walmart - and a bottle of aspirin are both $1.98 each... /s