[Subtypes of psychotic-like experiences in a community sample of young adults: socio-demographic correlates and substance use].

Aim: This study aimed to investigate if particular psychotic-like experiences (PLEs) subtypes were more likely to be associated with a series of socio-demographic variables, with alcohol abuse and with cannabis or illicit drug use. The idea is to further characterize different PLEs subtypes in order to discloud their individual nature.
Methods: A cross-sectional design was conducted on a sample of 997 university students aged between 19 and 26 years, which belonged to 4 faculties of 2 different universities. Alcohol abuse and cannabis or illicit drug use were assessed using a self-report questionnaire; PLEs were assessed using the Community Assessment of Psychic Experiences. Cases were randomized in order to obtain equipotent groups; then, an analysis of the probable dependence relations between PLEs subtypes and other variables was conducted using analysis of variance models.
Results: Persecutory ideas (PI) and bizarre experiences were more frequent within females and non-resident students, moreover PI were more frequent within younger subjects (<20 years). Magical thinking was significantly associated to a more frequent cannabis use in the last year (>1/month).
Conclusions: These results confirm usefulness and validity of a "subtype approach" to PLEs. In fact PLEs subtypes may have, not only a different clinical presentation, but even different epidemiological and psychopathological ones.