Yes.

But, if, using your example, its Three relapses in 3 years on placebo , and two relapses in 3 years on Tysabri, but you as a patient only have been getting 1 relapse every other year, it makes the risks look possibly less worth the benefit.

Or, it ist 3 relapses on placebo in 3 years, 2 relapses on Tysabri in 3 years, and 2 relapses on Copax and Rebif in 2.8 years, now what risks does the patient want to make in light of benefit.

I should add I do not know the # of relapses per year, I'm just building on y our example.

xo++ seems to know this stuff off the top of his head and might be able to fill in the blanks better.

The point being is that percentages do not give us a good picture of benefit when we weigh it against risk.