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Cited by 496

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Psychosis risk screening with the Prodromal Questionnaire — Brief Version (PQ-B)

Open access
Loewy, Rachel L., Pearson, Rahel, Vinogradov, Sophia, Bearden, Carrie E., Cannon, Tyrone D.·2011·Schizophrenia Research

Abstract

In this study, we examined the preliminary concurrent validity of a brief version of the Prodromal Questionnaire (PQ-B), a self-report screening measure for psychosis risk syndromes. Adolescents and young adults (N=141) who presented consecutively for clinical assessment to one of two early psychosis research clinics at the University of California, San Francisco and UC Los Angeles completed the PQ-B and the Structured Interview for Prodromal Syndromes (SIPS) at intake. Endorsement of three or more positive symptoms on the PQ-B differentiated between those with prodromal syndrome and psychotic syndrome diagnoses on the SIPS versus those with no SIPS diagnoses with 89% sensitivity, 58% specificity, and a positive Likelihood Ratio of 2.12. A Distress Score measuring the distress or impairment associated with endorsed positive symptoms increased the specificity to 68%, while retaining similar sensitivity of 88%. Agreement was very similar when participants with psychotic syndromes were excluded from the analyses. These results suggest that the PQ-B may be used as an effective, efficient self-report screen for prodromal psychosis syndromes when followed by diagnostic interview, in a two-stage evaluation process in help-seeking populations.

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Research works printed but not linked: 8

  1. Corcoran, 2010, The psychosis risk syndrome and its proposed inclusion in the DSM-V: a risk–benefit analysis, Schizophr. Res., 120, 16, 10.1016/j.schres.2010.03.018 · DOI
  2. Hanssen, 2003, Self-reported psychotic experiences in the general population: a valid screening tool for DSM-III-R psychotic disorders?, Acta Psychiatr. Scand., 107, 369, 10.1034/j.1600-0447.2003.00058.x · DOI
  3. Loewy, 2005, The Prodromal Questionnaire (PQ): preliminary validation of a self-report screening measure for prodromal and psychotic syndromes, Schizophr. Res., 79, 117, 10.1016/j.schres.2005.03.007 · DOI · Paper page
  4. Loewy, 2007, Self-report of attenuated psychotic experiences in a college population, Schizophr. Res., 93, 144, 10.1016/j.schres.2007.02.010 · DOI
  5. McGorry, 2003, The “close-in” or ultra high-risk model: a safe and effective strategy for research and clinical intervention in prepsychotic mental disorder, Schizophr. Bull., 29, 771, 10.1093/oxfordjournals.schbul.a007046 · DOI · Paper page
  6. Miller, 2003, Prodromal assessment with the Structured Interview for Prodromal Syndromes and the Scale of Prodromal Symptoms: predictive validity, interrater reliability, and training to reliability, Schizophr. Bull., 29, 703, 10.1093/oxfordjournals.schbul.a007040 · DOI · Paper page
  7. Yung, 2005, Mapping the onset of psychosis: the comprehensive assessment of at-risk mental states, Aust. N. Z. J. Psychiatry, 39, 964, 10.1080/j.1440-1614.2005.01714.x · DOI · Paper page
  8. Yung, 2007, PACE: a specialised service for young people at risk of psychotic disorders, Med. J. Aust., 187, S43

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Metadata

Authors
Loewy, R. L., Pearson, R., Vinogradov, S., Bearden, C. E., & Cannon, T. D.
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2011-06
Volume
129
Issue
1
Pages
42-46
ISSN
0920-9964 (ISSN-L)
OpenAlex
W2033579588
Cited by
496
References
3
FWCI
7.68
Type
journal article
Language
en
Open access
green
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)

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CoChat. (2026). Citation check: Psychosis risk screening with the Prodromal Questionnaire — Brief Version (PQ-B). https://app.cochat.ai/papers/10.1016/j.schres.2011.03.029
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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. https://doi.org/10.1016/j.schres.2011.03.029

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