The structure of the Prodromal Questionnaire-16 (PQ-16) in a non-help-seeking youth population: Exploratory and confirmatory factor analyses study

Outcomes for first-episode psychosis after entry via an at-risk mental state clinic compared to direct entry to a first episode of psychosis service: A systematic review and meta-analysis

(2022) Holly Sizer et al.   SCHIZOPHRENIA RESEARCH

Rationale and methods of the ‘Northern Ireland Youth Wellbeing Survey’ and initial findings from the Strengths and Difficulties Questionnaire

(2022) Lisa Bunting et al.   Clinical Child Psychology and Psychiatry

Age at onset of mental disorders worldwide: large-scale meta-analysis of 192 epidemiological studies

(2021) Marco Solmi et al.   MOLECULAR PSYCHIATRY

Screening for the at‐risk mental state in educational settings: A systematic review

(2019) Clare Howie et al.   Early Intervention in Psychiatry

The psychometric properties of the 16-item version of the Prodromal Questionnaire (PQ-16) as a screening instrument for perinatal psychosis

(2018) Elizabeth J. Levey et al.   Archives of Womens Mental Health

Validation of the Korean version of the 16-Item Prodromal Questionnaire in a Non-Help-Seeking College Population

(2018) Sung-Wan Kim et al.   Psychiatry Investigation

lavaan: AnRPackage for Structural Equation Modeling

(2015) Yves Rosseel   Journal of Statistical Software

Prevalence of psychosis in black ethnic minorities in Britain: analysis based on three national surveys

(2014) Tarik Qassem et al.   SOCIAL PSYCHIATRY AND PSYCHIATRIC EPIDEMIOLOGY

The Validity of the 16-Item Version of the Prodromal Questionnaire (PQ-16) to Screen for Ultra High Risk of Developing Psychosis in the General Help-Seeking Population

(2012) H. K. Ising et al.   SCHIZOPHRENIA BULLETIN

Polychoric versus Pearson correlations in exploratory and confirmatory factor analysis of ordinal variables

(2008) Francisco Pablo Holgado–Tello et al.   QUALITY & QUANTITY