Prodromal SymptomsSchizotypal Personality DisorderPsychotic DisordersSyncope, VasovagalPsychiatric Status Rating ScalesSchizophreniaTilt-Table TestDeath, SuddenSchizophrenic PsychologyRecurrenceRisk FactorsIntervention StudiesTime FactorsTreatment OutcomeQuestionnairesHealth PromotionFollow-Up StudiesDepressionEarly Medical InterventionProspective StudiesProgram EvaluationHealth EducationPatient Education as TopicEarly Intervention (Education)Severity of Illness IndexRandomized Controlled Trials as Topic