I think this "study" definitely takes the prize for the year's most blatant insult to the taxpayers' intelligence & wallets. To summarize, some vile clowns in white robes wasted several million in NIH funding to uncover the earth-shattering notion that youth who vape enjoy vaping and those who don't, not so much so.
Elsevier: Article Locator
Elsevier: Article Locator