3 of 3 replaced http://skeptics.stackexchange.com/ with https://skeptics.stackexchange.com/

Does the non-notable close reason apply to claims that already ostensibly provide evidence?

Are the top selling prescription drugs only effective for one in five patients?

The claim has a link to an actual peer reviewed article that supports it. It is pointless to ask a question that needs to be found by a Google search, when the answer can be found by clicking a link literally next to the claim. If one didn't have the patience to check the given sources, they won't certainly look here. Closing as non notable.

How do these facts lead to the conclusion that there are not many people that believe the claim (the test for notability on this site)?

How can we assume that the link/source given in the claim is actually the best evidence? What if there is other, contradictory, or better evidence?