Prodromal Questionnaire (PQ)

Prodromal Questionnaire (PQ)

The following versions are free to use for research, clinical purposes, and EHR platforms as long as users are not charged per use.

For consultation in implementation of a screener and use in particular settings, please contact Dr. Rachel Loewy at [email protected]
For translation permission and comments on a back translation, please contact Dr. Rachel Loewy at [email protected]
Dr. Loewy cannot give permission to use the PQ-16, instead please contact the first author Dr. Helga Ising ([email protected])

PQ-92

English (Original): Loewy, R. L., Bearden, C. E., Johnson, J. K., Raine, A., & Cannon, T. D. (2005). The prodromal questionnaire (PQ): preliminary validation of a self-report screening measure for prodromal and psychotic syndromes. Schizophrenia research, 77(2-3), 141–149. https://doi.org/10.1016/j.schres.2005.03.007. Reference Link

Arabic: Scale

Hebrew: Scale

Italian: Kotzalidis G.D., Solfanelli A., Piacentino D., Savoja V., Fiori Nastro P., Curto M., Lindau J.F., Masillo A., Brandizzi M., Fagioli F., Raballo A., Gebhardt E., Preti A., D'Alema M., Fucci M.R., Miletto R., Andropoli D., Leccisi D., Girardi P., Loewy R.L., Schultze-Lutter F. The Italian version of the 92-item Prodromal Questionnaire: Concurrent validity with the SIPS and factor analysis in a sample of 258 outpatients aged 11-36years. Schizophr Res. 2017 Nov;189:50-56. doi: 10.1016/j.schres.2017.02.008. Reference Link

Mandarin (Traditional): Chiu, S. C., Hwu, H. G., Shiau, S. J., Yao, G., & Hsieh, Y. S. (2010). Applicability of the Chinese version of the Prodromal Questionnaire. Journal of the Formosan Medical Association = Taiwan yi zhi, 109(9), 647–655. https://doi.org/10.1016/S0929-6646(10)60105-2. Reference Link

Portuguese: Gonçalves, Priscila Dib, Martins, Paula Andreia, Gordon, Pedro, & Louzã, Mário. (2012). Prodromal Questionnaire: translation, adaptation to Portuguese and preliminary results in ultra-high risk individuals and first episode psychosis. Jornal Brasileiro de Psiquiatria, 61(2), 96-101. https://dx.doi.org/10.1590/S0047-20852012000200007. Reference Link / Scale

PQ-B

English (Original): Loewy, R. L., Pearson, R., Vinogradov, S., Bearden, C. E., & Cannon, T. D. (2011). Psychosis risk screening with the Prodromal Questionnaire--brief version (PQ-B). Schizophrenia research, 129(1), 42–46. https://doi.org/10.1016/j.schres.2011.03.029. Reference Link / Scale

Arabic: Scale

Basque: Scale

Chinese (Hong Kong): Scale

Chinese (Simplified): Xu L., Zhang T., Zheng L., Li H., Tang Y., Luo X., et al. (2016) Psychometric Properties of Prodromal Questionnaire-Brief Version among Chinese HelpSeeking Individuals. PLoS ONE 11(2): e0148935. doi:10.1371/journal.pone.0148935. Reference Link / Scale

Chinese (Traditional): Scale

Dari: Scale

Farsi: Scale

French: Scale

German: Scale

Hebrew: Scale

Hindi: Scale

Hmong: Translated by University of California, Davis. Scale

Indonesian: Kaligis, F., Marsubrin, R. I. I., Wiguna, T., Noorhana, S.W., Almasyhur, A. F. (2018). Translation and validation study of the Prodromal Questionnaire Brief Version into Indonesian language. Asian Journal of Psychiatry, 37, 96-101. Reference Link / Scale

Italian: Pelizza, L., Azzali, S., Paterlini, F., Scazza, I., Garlassi, S., Chiri, L. R., Poletti, M., Pupo, S., Raballo, A. (2017). The Italian Version of the Brief 21-Item Prodromal Questionnaire: Field test, psychometric properties and age-sensitive cut-offs. Psychopathology, 51, 234-244. Reference Link / Scale

Korean: Jang, Y., Lee, T., Hur, J., Kwon, J. (2018).Validation of the Korean version of the Prodromal Questionnaire-Brief Version in non-help-seeking individuals. Psychiatry Investigation, 16(2), 109-114. Reference Link / Scale

Norwegian: Scale

Pashto: Scale

Polish: Starkowska, A, Tyburski, E, Kucharska‐Mazur, J, Mak, M, Samochowiec, J. Assessing self‐reported clinical high risk symptoms: The psychometric properties of the polish version of the prodromal questionnaire‐brief and a proposal for an alternative approach to scoring. Early Intervention in Psychiatry. 2020; 1– 13. Reference Link / Scale

Spanish: Fonseca-Pedrero, E., Pérez-Albéniz, A., Ortuño-Sierra, J., & Inchausti, F. (2021). Evaluación de las experiencias de tipo psicótico en adolescentes españoles: Baremación del Prodromal Questionnaire-Brief (PQ-B). Revista de Psicopatologia y Psicologia Clinica, 26(1), 35–46. https://doi-org.ucsf.idm.oclc.org/10.5944/rppc.26916. Reference Link / Scale

Turkish: Scale

Vietnamese: Translated by University of California, Davis. Scale

Yoruba: A.O. Okewole, D. Ajogbon, A.A. Adeniji, O.O. Omotoso, S.S. Awhangansi, M.E. Fasokun, A.A. Agboola, A.K. Oyekanmi,Psychosis risk screening among secondary school students in Abeokuta, Nigeria: Validity of the Prodromal Questionnaire — Brief Version (PQ-B), Schizophrenia Research, Volume 164, Issues 1–3, 2015, Pages 281-282,ISSN 0920-9964. Reference Link