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Psychotic-like experiences (PLEs) have been identified as risk markers for psychotic disorders and may indicate an individual's susceptibility to mental disorders in general. We examined whether 23 PLEs (assessed with M-CIDI questionnaire) reported in young adulthood (n = 1313) predict subsequent psychotic or any mental disorders in the general population. We also investigated whether these possible associations are explained by general psychological distress assessed with the General Health Questionnaire-12 (GHQ-12). The register follow-up period spanned 10-12 years. In Cox regression models, PLEs predicted subsequent psychotic disorders (n = 12) when the effects of age, sex, education, and marital status were adjusted for, but not when general psychological distress was added to the model. Having any mental disorders during follow-up (n = 91) was predicted by PLEs reported at a younger age, when controlling for age, sex, education, marital status, and general psychological distress. In line with earlier results in other age groups, PLEs can be seen as a sign of vulnerability to not just psychotic but all mental disorders during the following years also among young adults in the general population. PLEs were a predictive marker of general psychopathology independently from general psychological distress.
Lindgren et al. (Mon,) studied this question.