Another dubious study but something rings like common sense to me. Mentally struggling artists can go on at their craft alone and in isolation. Magicians need to be showpeople in addition to training a lot so any mental health problems would derail their careers. It’s also self selection at play as magicians need different skills than other creatives. Those skills such as being sharp, having laser focus, able at reading the audience don’t gell well with people who are struggling mentally. But I wouldn’t bet there are no magicians with mental health issues either…