Considering methodological options for reviews of theory: illustrated by a review of theories linking income and health

Campbell, M. , Egan, M., Lorenc, T., Bond, L., Popham, F. , Fenton, C. and Benzeval, M. (2014) Considering methodological options for reviews of theory: illustrated by a review of theories linking income and health. Systematic Reviews, 3, 114. (doi: 10.1186/2046-4053-3-114) (PMID:25312937) (PMCID:PMC4208031)

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Background: Review of theory is an area of growing methodological advancement. Theoretical reviews are particularly useful where the literature is complex, multi-discipline, or contested. It has been suggested that adopting methods from systematic reviews may help address these challenges. However, the methodological approaches to reviews of theory, including the degree to which systematic review methods can be incorporated, have received little discussion in the literature. We recently employed systematic review methods in a review of theories about the causal relationship between income and health.<p></p> Methods: This article discusses some of the methodological issues we considered in developing the review and offers lessons learnt from our experiences. It examines the stages of a systematic review in relation to how they could be adapted for a review of theory. The issues arising and the approaches taken in the review of theories in income and health are considered, drawing on the approaches of other reviews of theory.<p></p> Results: Different approaches to searching were required, including electronic and manual searches, and electronic citation tracking to follow the development of theories. Determining inclusion criteria was an iterative process to ensure that inclusion criteria were specific enough to make the review practical and focused, but not so narrow that key literature was excluded. Involving subject specialists was valuable in the literature searches to ensure principal papers were identified and during the inductive approaches used in synthesis of theories to provide detailed understanding of how theories related to another. Reviews of theory are likely to involve iterations and inductive processes throughout, and some of the concepts and techniques that have been developed for qualitative evidence synthesis can be usefully translated to theoretical reviews of this kind.<p></p> Conclusions: It may be useful at the outset of a review of theory to consider whether the key aim of the review is to scope out theories relating to a particular issue; to conduct in-depth analysis of key theoretical works with the aim of developing new, overarching theories and interpretations; or to combine both these processes in the review. This can help decide the most appropriate methodological approach to take at particular stages of the review.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Egan, Dr Matthew and Campbell, Ms Mhairi and Fenton, Ms Candida and Popham, Dr Frank and Benzeval, Dr Michaela and Bond, Professor Lyndal
Authors: Campbell, M., Egan, M., Lorenc, T., Bond, L., Popham, F., Fenton, C., and Benzeval, M.
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > MRC/CSO SPHSU
College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Mental Health and Wellbeing
Journal Name:Systematic Reviews
Publisher:BioMed Central
ISSN (Online):2046-4053
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Systematic Reviews 3(114)
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
656591Evaluating the Health Effects of Social InterventionsMatthew EganMedical Research Council (MRC)MC_UU_12017/4IHW - MRC/CSO SPHU
656621Social Patterning of Health over the LifecourseTimothy PophamMedical Research Council (MRC)MC_UU_12017/7IHW - MRC/CSO SPHU