Statistical modelling studies examining the dimensional structure of psychopathology experienced by adults with intellectual disabilities: Systematic review

Melville, C.A. , Johnson, P.C.D. , Smiley, E., Simpson, N., McConnachie, A. , Purves, D., Osugo, M. and Cooper, S.-A. (2016) Statistical modelling studies examining the dimensional structure of psychopathology experienced by adults with intellectual disabilities: Systematic review. Research in Developmental Disabilities, 53-54, pp. 1-10. (doi:10.1016/j.ridd.2016.01.018) (PMID:26852278)

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Abstract

Diagnosing mental ill-health using categorical classification systems has limited validity for clinical practice and research. Dimensions of psychopathology have greater validity than categorical diagnoses in the general population, but dimensional models have not had a significant impact on our understanding of mental ill-health and problem behaviours experienced by adults with intellectual disabilities. This paper systematically reviews the methods and findings from intellectual disabilities studies that use statistical methods to identify dimensions of psychopathology from data collected using structured assessments of psychopathology. The PRISMA framework for systematic review was used to identify studies for inclusion. Study methods were compared to best-practice guidelines on the use of exploratory factor analysis. Data from the 20 studies included suggest that it is possible to use statistical methods to model dimensions of psychopathology experienced by adults with intellectual disabilities. However, none of the studies used methods recommended for the analysis of non-continuous psychopathology data and all 20 studies used statistical methods that produce unstable results that lack reliability. Statistical modelling is a promising methodology to improve our understanding of mental ill-health experienced by adults with intellectual disabilities but future studies should use robust statistical methods to build on the existing evidence base.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McConnachie, Dr Alex and Johnson, Dr Paul and Cooper, Professor Sally-Ann and Melville, Professor Craig
Authors: Melville, C.A., Johnson, P.C.D., Smiley, E., Simpson, N., McConnachie, A., Purves, D., Osugo, M., and Cooper, S.-A.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > Mental Health and Wellbeing
College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > Robertson Centre
Journal Name:Research in Developmental Disabilities
Publisher:Elsevier
ISSN:0891-4222
ISSN (Online):1873-3379
Copyright Holders:Copyright © 2016 Elsevier Ltd.
First Published:First published in Research in Developmental Disabilities 53-54:1-10
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
576641Developing valid models of psychopathology experienced by adults with learning disabilitiesCraig MelvilleScottish Executive Health Department (SEHHD-CSO)CZG/2/556IHW - MENTAL HEALTH & WELLBEING