Jana Sremanakova1,2, Anne Marie Sowerbutts1,2, Chris Todd1,2,3,4, Richard Cooke5, Sorrel Burden1,2,4,6. 1. School of Health Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, UK. 2. Academic Health Science Centre, Manchester M13 9PL, UK. 3. Manchester University NHS Foundation Trust, Manchester M13 9WL, UK. 4. NIHR Applied Research Collaboration Greater Manchester, Manchester M13 9NQ, UK. 5. Department of Psychology, University of Liverpool, Liverpool L69 3B, UK. 6. Salford Royal NHS Foundation Trust, Manchester M6 8HD, UK.
Abstract
BACKGROUND: An increasing number of dietary interventions for cancer survivors have been based on the behaviour change theory framework. The purpose of this study is to review the use and implementation of behaviour change theories in dietary interventions for people after cancer and assess their effects on the reported outcomes. METHODS: The search strategy from a Cochrane review on dietary interventions for cancer survivors was expanded to incorporate an additional criterion on the use of behaviour change theory and updated to September 2020. Randomised controlled trials (RCT) testing a dietary intervention compared to the control were included. Standard Cochrane methodological procedures were used. RESULTS: Nineteen RCTs, with 6261 participants (age range 44.6 to 73.1 years), were included in the review. The Social Cognitive Theory was the most frequently used theory (15 studies, 79%). Studies included between 4 to 17 behaviour change techniques. Due to limited information on the mediators of intervention and large heterogeneity between studies, no meta-analyses was conducted to assess which theoretical components of the interventions are effective. CONCLUSIONS: Whilst researchers have incorporated behaviour change theories into dietary interventions for cancer survivors, due to inconsistencies in design, evaluation and reporting, the effect of theories on survivors' outcomes remains unclear.
BACKGROUND: An increasing number of dietary interventions for cancer survivors have been based on the behaviour change theory framework. The purpose of this study is to review the use and implementation of behaviour change theories in dietary interventions for people after cancer and assess their effects on the reported outcomes. METHODS: The search strategy from a Cochrane review on dietary interventions for cancer survivors was expanded to incorporate an additional criterion on the use of behaviour change theory and updated to September 2020. Randomised controlled trials (RCT) testing a dietary intervention compared to the control were included. Standard Cochrane methodological procedures were used. RESULTS: Nineteen RCTs, with 6261 participants (age range 44.6 to 73.1 years), were included in the review. The Social Cognitive Theory was the most frequently used theory (15 studies, 79%). Studies included between 4 to 17 behaviour change techniques. Due to limited information on the mediators of intervention and large heterogeneity between studies, no meta-analyses was conducted to assess which theoretical components of the interventions are effective. CONCLUSIONS: Whilst researchers have incorporated behaviour change theories into dietary interventions for cancer survivors, due to inconsistencies in design, evaluation and reporting, the effect of theories on survivors' outcomes remains unclear.
Authors: Bernardine M Pinto; Nancy C Maruyama; Matthew M Clark; Dean G Cruess; Elyse Park; Mary Roberts Journal: Mayo Clin Proc Date: 2002-02 Impact factor: 7.616
Authors: Dimitrios A Koutoukidis; Rebecca J Beeken; Ranjit Manchanda; Matthew Burnell; Nida Ziauddeen; Moscho Michalopoulou; M Tish Knobf; Anne Lanceley Journal: Int J Gynecol Cancer Date: 2019-02-04 Impact factor: 3.437
Authors: Anna L Hawkes; Suzanne K Chambers; Kenneth I Pakenham; Tania A Patrao; Peter D Baade; Brigid M Lynch; Joanne F Aitken; Xingqiong Meng; Kerry S Courneya Journal: J Clin Oncol Date: 2013-05-20 Impact factor: 44.544
Authors: Stuart J Wright; Debbie Gibson; Martin Eden; Simon Lal; Chris Todd; Andy Ness; Sorrel Burden Journal: J Cancer Surviv Date: 2017-04-20 Impact factor: 4.442
Authors: Chloe Grimmett; Teresa Corbett; Jennifer Brunet; Jonathan Shepherd; Bernardine M Pinto; Carl R May; Claire Foster Journal: Int J Behav Nutr Phys Act Date: 2019-04-27 Impact factor: 6.457
Authors: Christina Vassou; Mary Yannakoulia; Ekavi N Georgousopoulou; Christos Pitsavos; Mark Cropley; Demosthenes B Panagiotakos Journal: Nutrients Date: 2021-04-27 Impact factor: 5.717