Statins aren’t going to have a big impact in the short run who are only a moderate risk - because statins work progressively, by reducing or eliminating plaque buildup, and/or causing unstable plaque to calcify and stabilize. So it isn’t shocking that over 5 years you won’t see big differences. If you look over 30 years the differences can be very big.
Looking at these two calculators - the first a 10 year risk. I put my before statin numbers in and then after statin, including that I am taking statin, and my 10 year risk went from 9.1% to 6%, and 5% is the optimum number.
tools.acc.org
Now looking at a lifetime calculator, that 9% 10 year risk becomes a 46% lifetime risk.
The 6% with statin becomes a 36% lifetime risk
tools.acc.org
So a 36% chance of heart attack in a lifetime materially better than 46%? I would think so.
The argument against using 10 year risk is somewhat of a self defeating argument. Since the 10 year improvement seems modest, then some say it isn’t worth it. Since statins work best over long term, using 10 year risks will never seem worth it.
If someone only changed their oil every 15,000 miles, vs 5000, chances are in 5 years you wouldn’t notice a difference, at least in terms of your car failing. But over 10 years or longer I suspect the chances increase materially. I’ve never heard anybody make the argument don’t change your oil often because you likely won’t notice a difference in 5 years.