Evidence map›Paper›PMID 26407540›Full record

SynthesisClinical psychology review2015

The role of sleep dysfunction in the occurrence of delusions and hallucinations: A systematic review.

Sarah Reeve, Bryony Sheaves, Daniel Freeman

Open access · hybridAbstract readSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Clinical psychology review, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 117 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
117citing papers in PubMed, 7 pooled it
11.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

117 citing papers in PubMed, 7 syntheses or guidelines pooled it, 250 citations in OpenAlex.

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  13. Sleep as a psychiatric vital sign, not just a symptom.Dusunen adam : Bakirkoy Ruh ve Sinir Hastaliklari Hastanesi yayin organi · 2026
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57 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Sarah ReeveDepartment of Psychiatry, University of Oxford, UK.
Bryony SheavesDepartment of Psychiatry, University of Oxford, UK.
Daniel FreemanDepartment of Psychiatry, University of Oxford, UK. Electronic address: daniel.freeman@psych.ox.ac.uk.
University of Oxford · GB

Funding

Department of Health RP-2014-05-003Medical Research Council G0902308Wellcome Trust 098461Wellcome Trust 098461/Z/12/Z
6 · The paper itself

Abstract

backgroundSleep dysfunction is extremely common in patients with schizophrenia. Recent research indicates that sleep dysfunction may contribute to psychotic experiences such as delusions and hallucinations.

objectivesThe review aims to evaluate the evidence for a relationship between sleep dysfunction and individual psychotic experiences, make links between the theoretical understanding of each, and highlight areas for future research.

methodA systematic search was conducted to identify studies investigating sleep and psychotic experiences across clinical and non-clinical populations.

results66 papers were identified. This literature robustly supports the co-occurrence of sleep dysfunction and psychotic experiences, particularly insomnia with paranoia. Sleep dysfunction predicting subsequent psychotic experiences receives support from epidemiological surveys, research on the transition to psychosis, and relapse studies. There is also evidence that reducing sleep elicits psychotic experiences in non-clinical individuals, and that improving sleep in individuals with psychosis may lessen psychotic experiences. Anxiety and depression consistently arise as (partial) mediators of the sleep and psychosis relationship.

conclusionStudies are needed that: determine the types of sleep dysfunction linked to individual psychotic experiences; establish a causal connection between sleep and psychotic experiences; and assess treatments for sleep dysfunction in patients with non-affective psychotic disorders such as schizophrenia.

Indexed as

DelusionsHallucinationsHumansPsychotic DisordersSchizophreniaSleep Wake DisordersDelusionsHallucinationsInsomniaPsychosisSchizophreniaSleep

Identifiers

PMID26407540
PMCPMC4786636
OpenAlexW1615114779

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.