UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Structure and stability of symptoms in first episode psychosis: a longitudinal network approach

Griffiths, SL; Leighton, SP; Mallikarjun, PK; Blake, G; Everard, L; Jones, PB; Fowler, D; ... Upthegrove, R; + view all (2021) Structure and stability of symptoms in first episode psychosis: a longitudinal network approach. Translational Psychiatry , 11 , Article 567. 10.1038/s41398-021-01687-y. Green open access

[thumbnail of Freemantle_Structure and stability of symptoms in first episode psychosis_VoR.pdf]
Preview
Text
Freemantle_Structure and stability of symptoms in first episode psychosis_VoR.pdf - Published Version

Download (1MB) | Preview

Abstract

Early psychosis is characterised by heterogeneity in illness trajectories, where outcomes remain poor for many. Understanding psychosis symptoms and their relation to illness outcomes, from a novel network perspective, may help to delineate psychopathology within early psychosis and identify pivotal targets for intervention. Using network modelling in first episode psychosis (FEP), this study aimed to identify: (a) key central and bridge symptoms most influential in symptom networks, and (b) examine the structure and stability of the networks at baseline and 12-month follow-up. Data on 1027 participants with FEP were taken from the National EDEN longitudinal study and used to create regularised partial correlation networks using the ‘EBICglasso’ algorithm for positive, negative, and depressive symptoms at baseline and at 12-months. Centrality and bridge estimations were computed using a permutation-based network comparison test. Depression featured as a central symptom in both the baseline and 12-month networks. Conceptual disorganisation, stereotyped thinking, along with hallucinations and suspiciousness featured as key bridge symptoms across the networks. The network comparison test revealed that the strength and bridge centralities did not differ significantly between the two networks (C = 0.096153; p = 0.22297). However, the network structure and connectedness differed significantly from baseline to follow-up (M = 0.16405, p = <0.0001; S = 0.74536, p = 0.02), with several associations between psychosis and depressive items differing significantly by 12 months. Depressive symptoms, in addition to symptoms of thought disturbance (e.g. conceptual disorganisation and stereotyped thinking), may be examples of important, under-recognized treatment targets in early psychosis, which may have the potential to lead to global symptom improvements and better recovery.

Type: Article
Title: Structure and stability of symptoms in first episode psychosis: a longitudinal network approach
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41398-021-01687-y
Publisher version: https://doi.org/10.1038/s41398-021-01687-y
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Inst of Clinical Trials and Methodology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Inst of Clinical Trials and Methodology > Comprehensive CTU at UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10138926
Downloads since deposit
14Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item