Table 1. Demographic and clinical profiles of normal controls, ultra-high risk (UHR) for psychosis, and first-episode schizophrenia patients.

^*significant difference between normal controls and UHR patients for psychosis (p<0.05), ^†significant difference between normal controls and first-episode schizophrenia patients (p<0.05), ^‡significant difference between UHR for psychosis and first-episode schizophrenia patients (p<0.05). SAPS (Andreason, 1983): Scale for Assessment of Positive Symptoms, 2 UHR data are missing, SANS (Andreason, 1983): Scale for Assessment of Negative Symptoms, 2 UHR data are missing, SIPS (McGlashan et al., 2003): Structured Interview for Prodromal Syndromes; MADRS (Montgomery and Asberg, 1979): Montgomery-Åsberg Depression Rating Scale, 4 First-episode schizophrenics data are missing. BIPS: Brief Intermittent Psychotic Symptom Prodromal Syndrome, APS: Attenuated Positive Symptom Prodromal Syndrome, GRDS: Genetic Risk and Deterioration Prodromal Syndrome