Prodromal SymptomsSchizotypal Personality DisorderPsychotic DisordersSyncope, VasovagalPsychiatric Status Rating ScalesSchizophreniaTilt-Table TestDeath, SuddenSchizophrenic PsychologyRecurrenceRisk FactorsTime FactorsTreatment OutcomeOutcome Assessment (Health Care)Pregnancy OutcomeRetrospective StudiesFollow-Up StudiesProspective StudiesSeverity of Illness IndexDepressionPrognosis