Group characteristics long-term follow-up sample.

a =  Years of education averaged for both parents; b  =  Four BSABS-P scores (3 UHR-NP, 1 UHR-P) were incomplete; c  =  Participants fulfilling multiple criteria were added as a separate individual in each category and for one UHR-P individual the COGDIS criterion could not be evaluated due to missing values; d  =  Participants using more than one type of medication were added as a separate individual in each category; e  =  unavailable for two UHR-P individuals; TDC  =  typically developing controls, UHR  =  Ultra-High Risk; UHR-NP  =  Ultra-High Risk without subsequent psychosis; UHR-P  =  Ultra-High Risk with subsequent psychosis; SIPS/SOPS  =  Structured Interview for the assessment of Prodromal Syndromes/Scale of Prodromal Symptoms; BSABS-P  =  Bonn Scale for the Assessment of Basic Symptoms – Prediction; GAF  =  Global Assessment of Functioning; APS  =  Attenuated Positive Symptoms; BLIPS  =  Brief Limited and Intermittent Psychotic Symptoms; GRD  =  Genetic Risk and a Deterioration in functioning; COGDIS  =  Cognitive Disturbances; mGAF  =  Modified Global Assessment of Functioning.