Is long covid a hoax?

No.13388033 ViewReplyOriginalReport
Pic related. They did a study on 15 year old students. Students didnt know if they ever had covid or not. Asked them about symptoms of "Long Covid". An equal number of students who had COVID and who did not have covid in the past reported having Long covid symptoms.

Given that there's no data to suggest the existence of Long Covid, is this study sufficient to conclude that Long Covid most likely isn't real?