An Epidemiological Investigation of Adolescents and Symptomatic High Risk for Psychosis

摘要: s and assessed the relevance appropriateness of studies for question under review (see Figure 2.1). Full texts potentially relevant papers were obtained. Where necessary, authors contacted further information. From each paper collected, two individuals (Ian Kelleher Mary Clarke) extracted data on age range participants reported rates psychotic symptoms. samples overlapped (e.g., publications preliminary data), that largest overall sample size used. 2.2.6 Data Analysis Eligible divided into groups according to whether aged 9 12 years (the child population) or 13 18 adolescent population). cut across these ranges, mean was used assign study ‘childhood’ ‘adolescence’ group. We adopted approach advocated by Saha et al. also in a previous symptom meta-analysis conducted van Os etal. summarise rate data, reporting median prevalences both (Saha etal., 2008, 2009). 2.3 Results Our literature search yielded 3,597 papers. Titles and, as abstracts read determine articles interest research question, yielding 199 Of these, 26 (13%) had prevalence