Prescription stimulants like amphetamine and methylphenidate are more potent than caffeine.
What if the headline had said "75 % of med students are on drugs" but actually it just means that 75 % of med students occasionally take acetaminophen or aspirin for headaches? Those are indeed drugs, but wouldn't you feel misled? People drinking coffee is not newsworthy, so one wouldn't expect an article about it. I haven't looked at the data the article is based on, so I don't know if something like this is what's going on, but I think this is the point village-idiot was trying to make.
What if the headline had said "75 % of med students are on drugs" but actually it just means that 75 % of med students occasionally take acetaminophen or aspirin for headaches? Those are indeed drugs, but wouldn't you feel misled? People drinking coffee is not newsworthy, so one wouldn't expect an article about it. I haven't looked at the data the article is based on, so I don't know if something like this is what's going on, but I think this is the point village-idiot was trying to make.