Comparison of first episode schizophrenia patients, first-degree relatives of patients with chronic schizophrenia and healthy controls with respect to demographic, neurocognitive and clinical characteristics.

CTT = Color Trails Test; DUP = Duration of untreated psychosis; EBPM = Event-based prospective memory; HVLT-R = Hopkins Verbal Learning Test-Revised Version; k = Kruskal-Wallis H test; PANSS = Positive and Negative Syndrome Scale; PSP = Personal and Social Performance Scale; SCWT = Stroop Color Word Test; WCST-PE = Wisconsin Card Sorting Test (percentage of perseverative errors); WCST-CC = Wisconsin Card Sorting Test (number of categories completed); TBPM = Time-based prospective memory; VFC = Verbal Fluency Test (Category test); VFL = Verbal Fluency Test (Letter test). Comparison of first episode schizophrenia patients, first-degree relatives of patients with chronic schizophrenia and healthy controls with respect to demographic, neurocognitive and clinical characteristics.