Reasons for Cannabis Use Among Youths at Ultra High Risk for Psychosis (2013)

I'm sorry, but I read the first line of this paper and was already confuzzled: "Cannabis use is prevalent in schizophrenia and its risk states, despite its association with anxiety and positive symptoms."

Did they mean "schizophrenic patients" or is this some type of shorthand in which medical paper authors use the names medical conditions without explicitly referring to the patients themselves?

This is just really weird wording to me - to the point where I question it's legitimacy.