Demographics revoked participants

Hi there,

I’ve a question about the demographic data I’ve got from Prolific.

Background: I used a prescreening criterion that only allowed those who lived in the US to participate. The data were in, the study completed. I looked at the demographic data “pre-collected by Prolific.” There were two kinds of residency: the US, which is good, and “data revoked,” which I understand.

Question: Can I safely assume all those who revoked their demographics fulfilled the participation criterion and in fact resided in the US?

If not, then actually Prolific failed to fulfill my request to only recruit Americans, for which I paid. This should be fixed.

If yes, then I’m just curious if Prolific and those participants know their demographics were somehow leaked when they actually wanted the opposite. This is not really my business tho.

Thanks for the help!

Cheers,
Yenping