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The state of the art and future opportunities for using longitudinal n-of-1 methods in health behaviour research: a systematic literature overview.

McDonald, Suzanne; Quinn, Francis; Vieira, Rute; O'Brien, Nicola; White, Martin; Johnston, Derek W.; Sniehotta, Falko F.

Authors

Suzanne McDonald

Francis Quinn

Rute Vieira

Nicola O'Brien

Martin White

Derek W. Johnston

Falko F. Sniehotta



Abstract

N-of-1 studies test hypotheses within individuals based on repeated measurement of variables within the individual over time. Intra-individual effects may differ from those found in between-participant studies. Using examples from a systematic review of n-of-1 studies in health behaviour research, this article provides a state of the art overview of the use of n-of-1 methods, organised according to key methodological considerations related to n-of-1 design and analysis, and describes future challenges and opportunities. A comprehensive search strategy (PROSPERO:CRD42014007258) was used to identify articles published between 2000 and 2016, reporting observational or interventional n-of-1 studies with health behaviour outcomes. Thirty-nine articles were identified which reported on n-of-1 observational designs and a range of interventional designs, including AB, ABA, ABABA, alternating treatments, n-of-1 randomised controlled trial, multiple baseline and changing criterion designs. Behaviours measured included treatment adherence, physical activity, drug/alcohol use, sleep, smoking, and eating behaviour. Descriptive, visual or statistical analyses were used. We identify scope and opportunities for using n-of-1 methods to answer key questions in health behaviour research. N-of-1 methods provide the tools needed to help advance theoretical knowledge and personalise/tailor health behaviour interventions to individuals.

Citation

MCDONALD, S., QUINN, F., VIEIRA, R., O'BRIEN, N., WHITE, M., JOHNSTON, D.W. and SNIEHOTTA, F.F. 2017. The state of the art and future opportunities for using longitudinal n-of-1 methods in health behaviour research: a systematic literature overview. Health psychology review [online], 11(4), pages 307-323. Available from: https://doi.org/10.1080/17437199.2017.1316672

Journal Article Type Review
Acceptance Date Apr 2, 2017
Online Publication Date Apr 13, 2017
Publication Date Dec 31, 2017
Deposit Date Apr 14, 2017
Publicly Available Date Apr 14, 2018
Journal Health psychology review
Print ISSN 1743-7199
Electronic ISSN 1743-7202
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 11
Issue 4
Pages 307-323
DOI https://doi.org/10.1080/17437199.2017.1316672
Keywords N-of-1 methods; Health behaviour; Single-case; Idiographic methods
Public URL http://hdl.handle.net/10059/2271

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