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Gilbody S, Littlewood E, McMillan D, Atha L, Bailey D, Baird K, Brady S, Burke L, Chew-Graham CA, Coventry P, Crosland S, Fairhurst C, Henry A, Hollingsworth K, Newbronner E, Ryde E, Shearsmith L, Wang HI, Webster J, Woodhouse R, Clegg A, Dexter-Smith S, Gentry T, Hewitt C, Hill A, Lovell K, Sloan C, Traviss-Turner G, Pratt S, Ekers D. Behavioural activation to mitigate the psychological impacts of COVID-19 restrictions on older people in England and Wales (BASIL+): a pragmatic randomised controlled trial. THE LANCET. HEALTHY LONGEVITY 2024; 5:e97-e107. [PMID: 38310902 PMCID: PMC10834375 DOI: 10.1016/s2666-7568(23)00238-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/27/2023] [Accepted: 11/09/2023] [Indexed: 02/06/2024] Open
Abstract
BACKGROUND Older adults were more likely to be socially isolated during the COVID-19 pandemic, with increased risk of depression and loneliness. We aimed to investigate whether a behavioural activation intervention delivered via telephone could mitigate depression and loneliness in at-risk older people during the COVID-19 pandemic. METHODS BASIL+ (Behavioural Activation in Social Isolation) was a pragmatic randomised controlled trial conducted among patients recruited from general practices in England and Wales, and was designed to assess the effectiveness of behavioural activation in mitigating depression and loneliness among older people during the COVID-19 pandemic. Eligible participants were aged 65 years and older, socially isolated, with a score of 5 or higher on the Patient Health Questionnaire-9 (PHQ-9), and had multiple long-term conditions. Participants were allocated in a 1:1 ratio to the intervention (behavioural activation) or control groups by use of simple randomisation without stratification. Behavioural activation was delivered by telephone; participants were offered up to eight weekly sessions with trained BASIL+ Support Workers. Behavioural activation was adapted to maintain social connections and encourage socially reinforcing activities. Participants in the control group received usual care with existing COVID-19 wellbeing resources. The primary clinical outcome was self-reported depression severity, assessed by the PHQ-9, at 3 months. Outcomes were assessed masked to allocation and analysis was by treatment allocation. This trial is registered with the ISRCTN registry (ISRCTN63034289). FINDINGS Between Feb 8, 2021, and Feb 28, 2022, 449 eligible participants were identified and 435 from 26 general practices were recruited and randomly assigned (1:1) to the behavioural activation intervention (n=218) or to the control group (usual care with signposting; n=217). The mean age of participants was 75·7 years (SD 6·7); 270 (62·1%) of 435 participants were female, and 418 (96·1%) were White. Participants in the intervention group attended an average of 5·2 (SD 2·9) of eight remote behavioural activation sessions. The adjusted mean difference in PHQ-9 scores between the control and intervention groups at 3 months was -1·65 (95% CI -2·54 to -0·75, p=0·0003). No adverse events were reported that were attributable to the behavioural activation intervention. INTERPRETATION Behavioural activation is an effective and potentially scalable intervention that can reduce symptoms of depression and emotional loneliness in at-risk groups in the short term. The findings of this trial add to the range of strategies to improve the mental health of older adults with multiple long-term conditions. These results can be helpful to policy makers beyond the pandemic in reducing the global burden of depression and addressing the health impacts of loneliness, particularly in at-risk groups. FUNDING UK National Institute for Health and Care Research.
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Affiliation(s)
- Simon Gilbody
- Department of Health Sciences, University of York, York, UK; Hull York Medical School, University of York, York, UK.
| | - Elizabeth Littlewood
- Department of Health Sciences, University of York, York, UK; Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
| | - Dean McMillan
- Department of Health Sciences, University of York, York, UK; Hull York Medical School, University of York, York, UK; Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
| | - Lucy Atha
- Department of Health Sciences, University of York, York, UK
| | - Della Bailey
- Department of Health Sciences, University of York, York, UK
| | - Kalpita Baird
- Department of Health Sciences, University of York, York, UK
| | - Samantha Brady
- Department of Health Sciences, University of York, York, UK
| | - Lauren Burke
- Department of Health Sciences, University of York, York, UK
| | | | - Peter Coventry
- Department of Health Sciences, University of York, York, UK; York Environmental Sustainability Institute, University of York, York, UK
| | | | | | - Andrew Henry
- Department of Health Sciences, University of York, York, UK; Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
| | - Kelly Hollingsworth
- Department of Health Sciences, University of York, York, UK; Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
| | | | - Eloise Ryde
- Department of Health Sciences, University of York, York, UK; Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
| | | | - Han-I Wang
- Department of Health Sciences, University of York, York, UK
| | | | | | - Andrew Clegg
- School of Medicine, University of Leeds, Leeds, UK
| | - Sarah Dexter-Smith
- Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
| | | | | | - Andrew Hill
- School of Medicine, University of Leeds, Leeds, UK
| | - Karina Lovell
- Division of Nursing, Midwifery & Social Work, University of Manchester, Manchester, UK
| | - Claire Sloan
- Department of Health Sciences, University of York, York, UK
| | | | | | - David Ekers
- Department of Health Sciences, University of York, York, UK; Tees, Esk and Wear Valleys NHS Foundation Trust, Research & Development, Flatts Lane Centre, Middlesbrough, UK
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Littlewood E, McMillan D, Chew Graham C, Bailey D, Gascoyne S, Sloane C, Burke L, Coventry P, Crosland S, Fairhurst C, Henry A, Hewitt C, Baird K, Ryde E, Shearsmith L, Traviss-Turner G, Woodhouse R, Webster J, Meader N, Churchill R, Eddy E, Heron P, Hicklin N, Shafran R, Almeida O, Clegg A, Gentry T, Hill A, Lovell K, Dexter-Smith S, Ekers D, Gilbody S. Can we mitigate the psychological impacts of social isolation using behavioural activation? Long-term results of the UK BASIL urgent public health COVID-19 pilot randomised controlled trial and living systematic review. EVIDENCE-BASED MENTAL HEALTH 2022; 25:e49-e57. [PMID: 36223980 PMCID: PMC9811092 DOI: 10.1136/ebmental-2022-300530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/20/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Behavioural and cognitive interventions remain credible approaches in addressing loneliness and depression. There was a need to rapidly generate and assimilate trial-based data during COVID-19. OBJECTIVES We undertook a parallel pilot RCT of behavioural activation (a brief behavioural intervention) for depression and loneliness (Behavioural Activation in Social Isolation, the BASIL-C19 trial ISRCTN94091479). We also assimilate these data in a living systematic review (PROSPERO CRD42021298788) of cognitive and/or behavioural interventions. METHODS Participants (≥65 years) with long-term conditions were computer randomised to behavioural activation (n=47) versus care as usual (n=49). Primary outcome was PHQ-9. Secondary outcomes included loneliness (De Jong Scale). Data from the BASIL-C19 trial were included in a metanalysis of depression and loneliness. FINDINGS The 12 months adjusted mean difference for PHQ-9 was -0.70 (95% CI -2.61 to 1.20) and for loneliness was -0.39 (95% CI -1.43 to 0.65).The BASIL-C19 living systematic review (12 trials) found short-term reductions in depression (standardised mean difference (SMD)=-0.31, 95% CI -0.51 to -0.11) and loneliness (SMD=-0.48, 95% CI -0.70 to -0.27). There were few long-term trials, but there was evidence of some benefit (loneliness SMD=-0.20, 95% CI -0.40 to -0.01; depression SMD=-0.20, 95% CI -0.47 to 0.07). DISCUSSION We delivered a pilot trial of a behavioural intervention targeting loneliness and depression; achieving long-term follow-up. Living meta-analysis provides strong evidence of short-term benefit for loneliness and depression for cognitive and/or behavioural approaches. A fully powered BASIL trial is underway. CLINICAL IMPLICATIONS Scalable behavioural and cognitive approaches should be considered as population-level strategies for depression and loneliness on the basis of a living systematic review.
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Affiliation(s)
| | - Dean McMillan
- Health Sciences, University of York, York, UK
- Centre for Health and Population Science, Hull York Medical School, Hull, UK
| | | | | | | | | | | | - Peter Coventry
- Health Sciences, University of York, York, UK
- York Environmental Sustainability Institute, University of York, York, UK
| | | | | | | | | | | | - Eloise Ryde
- Health Sciences, University of York, York, UK
- Research and Development Unit, Tees Esk and Wear Valleys NHS Foundation Trust, Darlington, UK
| | | | | | | | - Judith Webster
- Research and Development Unit, Tees Esk and Wear Valleys NHS Foundation Trust, Darlington, UK
| | - Nick Meader
- Faculty of Medical Sciences, University of Newcastle, Newcastle upon Tyne, UK
| | - Rachel Churchill
- Cochrane Common Mental Disorders Group, University of York, York, UK
| | - Elizabeth Eddy
- Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK
| | - Paul Heron
- Health Sciences, University of York, York, UK
| | - Nisha Hicklin
- Department of Psychology, Royal Holloway University of London, Egham, UK
| | - Roz Shafran
- PPP, University College London Institute of Child Health, London, UK
- Paediatric Psychology Services, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Osvaldo Almeida
- UWA Medical School, The University of Western Australia, Perth, Western Australia, Australia
| | - Andrew Clegg
- Faculty of Medicine and Health, University of Leeds, Leeds, UK
- Bradford Institute for Health Research, Bradford Royal Infirmary, Bradford, UK
| | - Tom Gentry
- Health and Care Policy, Age UK, London, UK
| | - Andrew Hill
- Faculty of Medicine and Health, University of Leeds, Leeds, UK
| | - Karina Lovell
- Division of Nursing, Midwifery and Social Work, The University of Manchester, Manchester, UK
| | - Sarah Dexter-Smith
- Research and Development Unit, Tees Esk and Wear Valleys NHS Foundation Trust, Darlington, UK
| | - David Ekers
- Health Sciences, University of York, York, UK
- Research and Development Unit, Tees Esk and Wear Valleys NHS Foundation Trust, Darlington, UK
| | - Simon Gilbody
- Health Sciences, University of York, York, UK
- Centre for Health and Population Sciences, Hull York Medical School, York, UK
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Almeida OP, Patel H, Velasquez D, Kelly R, Lai R, Ford AH, Curran E, Flicker L, Chong TWH, Etherton-Beer C, LoGiudice D, Ellis KA, Martini A, Westphal A, Ekers D, Gilbody S, Lautenschlager NT. Behavioral Activation in Nursing Homes to Treat Depression (BAN-Dep): Results From a Clustered, Randomized, Single-Blinded, Controlled Clinical Trial. Am J Geriatr Psychiatry 2022; 30:1313-1323. [PMID: 35680539 DOI: 10.1016/j.jagp.2022.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 01/25/2023]
Abstract
OBJECTIVES To determine if behavioral activation (BA) delivered by trained staff decreases prevalence of clinically significant symptoms of depression among older adults living in residential aged care facilities (RACFs). METHODS Clustered, randomized, single-blinded, controlled trial of BA for adults aged over 60 years living permanently in a RACF with symptoms of depression (Patient Health Questionnaire, PHQ-9 ≥ 5). BA was delivered over 8-12 weeks using a structured workbook. The proportion of residents with PHQ-9 ≥ 10 at weeks 12, 26, and 52, as well as anxiety symptoms (GAD-7), physical (PCS), and mental (MCS) quality of life, loneliness, and loss to follow-up were main outcomes of interest RESULTS: We recruited 54 RACFs (26 intervention) and 188 of their residents (89 intervention). Participants were aged 61-100 years and 132 (70.2%) were women. PHQ-9 ≥ 10 interacted with BA at week 12 (OR = 0.34, 95%CI = 0.11-1.07), but differences between the groups were not statistically significant at any time-point. GAD-7 ≥ 10 interacted with BA at week 26 (OR = 0.12, 95%CI = 0.02-0.58), but not at any other time-point. Overall, the intervention had no effect on the scores of the PHQ-9, GAD-7, PCS, MCS, and loneliness scale. Loss to follow-up was similar between groups. Adherence to all stages of the intervention was poor (36.2%). CONCLUSIONS Disruption by the COVID-19 pandemic and staffing issues in RACFs undermined recruitment and adherence. In such a context, a BA program delivered by RACF staff was not associated with better mental health outcomes for residents over 52 weeks.
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Affiliation(s)
- Osvaldo P Almeida
- Medical School (OPA, HP, RK, AHF, LF, CE-B), University of Western Australia, Perth, Australia.
| | - Hema Patel
- Medical School (OPA, HP, RK, AHF, LF, CE-B), University of Western Australia, Perth, Australia
| | - Diana Velasquez
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia
| | - Rachael Kelly
- Medical School (OPA, HP, RK, AHF, LF, CE-B), University of Western Australia, Perth, Australia
| | - Rhoda Lai
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia
| | - Andrew H Ford
- Medical School (OPA, HP, RK, AHF, LF, CE-B), University of Western Australia, Perth, Australia
| | - Eleanor Curran
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia; NorthWestern Mental Health (EC, NTL), Royal Melbourne Hospital, Melbourne, Australia
| | - Leon Flicker
- Medical School (OPA, HP, RK, AHF, LF, CE-B), University of Western Australia, Perth, Australia
| | - Terence W H Chong
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia; St Vincent's Hospital Melbourne (TWHC), Melbourne, Australia
| | | | - Dina LoGiudice
- Department of Medicine (DL), University of Melbourne, Melbourne, Australia
| | - Kathryn A Ellis
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia; Melbourne School of Psychological Sciences, University of Melbourne, Melbourne, Australia
| | | | - Alissa Westphal
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia
| | - David Ekers
- Tees Esk and Wear Valleys NHS FT/MHARG (KAE, DE), University of York, York, UK
| | - Simon Gilbody
- Mental Health and Addictions Research Group (SG), HYMS & University of York, York, UK
| | - Nicola T Lautenschlager
- Department of Psychiatry (DV, RL, EC, TWHC, KAE, AW, NTL), University of Melbourne, Melbourne, Australia; NorthWestern Mental Health (EC, NTL), Royal Melbourne Hospital, Melbourne, Australia
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Weinstein ER, Jimenez DE. To Activate or Not to Activate: An Integral Question for Self-Guided Behavioral Activation Interventions for Older Adults with Sub-Clinical Depression. Am J Geriatr Psychiatry 2022; 30:208-210. [PMID: 34330624 PMCID: PMC8742833 DOI: 10.1016/j.jagp.2021.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 02/03/2023]
Affiliation(s)
| | - Daniel E Jimenez
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, FL.
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Gilbody S, Littlewood E, McMillan D, Chew-Graham CA, Bailey D, Gascoyne S, Sloan C, Burke L, Coventry P, Crosland S, Fairhurst C, Henry A, Hewitt C, Joshi K, Ryde E, Shearsmith L, Traviss-Turner G, Woodhouse R, Clegg A, Gentry T, Hill AJ, Lovell K, Dexter Smith S, Webster J, Ekers D. Behavioural activation to prevent depression and loneliness among socially isolated older people with long-term conditions: The BASIL COVID-19 pilot randomised controlled trial. PLoS Med 2021; 18:e1003779. [PMID: 34637450 PMCID: PMC8509874 DOI: 10.1371/journal.pmed.1003779] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/20/2021] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Older adults, including those with long-term conditions (LTCs), are vulnerable to social isolation. They are likely to have become more socially isolated during the Coronavirus Disease 2019 (COVID-19) pandemic, often due to advice to "shield" to protect them from infection. This places them at particular risk of depression and loneliness. There is a need for brief scalable psychosocial interventions to mitigate the psychological impacts of social isolation. Behavioural activation (BA) is a credible candidate intervention, but a trial is needed. METHODS AND FINDINGS We undertook an external pilot parallel randomised trial (ISRCTN94091479) designed to test recruitment, retention and engagement with, and the acceptability and preliminary effects of the intervention. Participants aged ≥65 years with 2 or more LTCs were recruited in primary care and randomised by computer and with concealed allocation between June and October 2020. BA was offered to intervention participants (n = 47), and control participants received usual primary care (n = 49). Assessment of outcome was made blind to treatment allocation. The primary outcome was depression severity (measured using the Patient Health Questionnaire 9 (PHQ-9)). We also measured health-related quality of life (measured by the Short Form (SF)-12v2 mental component scale (MCS) and physical component scale (PCS)), anxiety (measured by the Generalised Anxiety Disorder 7 (GAD-7)), perceived social and emotional loneliness (measured by the De Jong Gierveld Scale: 11-item loneliness scale). Outcome was measured at 1 and 3 months. The mean age of participants was aged 74 years (standard deviation (SD) 5.5) and they were mostly White (n = 92, 95.8%), and approximately two-thirds of the sample were female (n = 59, 61.5%). Remote recruitment was possible, and 45/47 (95.7%) randomised to the intervention completed 1 or more sessions (median 6 sessions) out of 8. A total of 90 (93.8%) completed the 1-month follow-up, and 86 (89.6%) completed the 3-month follow-up, with similar rates for control (1 month: 45/49 and 3 months 44/49) and intervention (1 month: 45/47and 3 months: 42/47) follow-up. Between-group comparisons were made using a confidence interval (CI) approach, and by adjusting for the covariate of interest at baseline. At 1 month (the primary clinical outcome point), the median number of completed sessions for people receiving the BA intervention was 3, and almost all participants were still receiving the BA intervention. The between-group comparison for the primary clinical outcome at 1 month was an adjusted between-group mean difference of -0.50 PHQ-9 points (95% CI -2.01 to 1.01), but only a small number of participants had completed the intervention at this point. At 3 months, the PHQ-9 adjusted mean difference (AMD) was 0.19 (95% CI -1.36 to 1.75). When we examined loneliness, the adjusted between-group difference in the De Jong Gierveld Loneliness Scale at 1 month was 0.28 (95% CI -0.51 to 1.06) and at 3 months -0.87 (95% CI -1.56 to -0.18), suggesting evidence of benefit of the intervention at this time point. For anxiety, the GAD adjusted between-group difference at 1 month was 0.20 (-1.33, 1.73) and at 3 months 0.31 (-1.08, 1.70). For the SF-12 (physical component score), the adjusted between-group difference at 1 month was 0.34 (-4.17, 4.85) and at 3 months 0.11 (-4.46, 4.67). For the SF-12 (mental component score), the adjusted between-group difference at 1 month was 1.91 (-2.64, 5.15) and at 3 months 1.26 (-2.64, 5.15). Participants who withdrew had minimal depressive symptoms at entry. There were no adverse events. The Behavioural Activation in Social Isolation (BASIL) study had 2 main limitations. First, we found that the intervention was still being delivered at the prespecified primary outcome point, and this fed into the design of the main trial where a primary outcome of 3 months is now collected. Second, this was a pilot trial and was not designed to test between-group differences with high levels of statistical power. Type 2 errors are likely to have occurred, and a larger trial is now underway to test for robust effects and replicate signals of effectiveness in important secondary outcomes such as loneliness. CONCLUSIONS In this study, we observed that BA is a credible intervention to mitigate the psychological impacts of COVID-19 isolation for older adults. We demonstrated that it is feasible to undertake a trial of BA. The intervention can be delivered remotely and at scale, but should be reserved for older adults with evidence of depressive symptoms. The significant reduction in loneliness is unlikely to be a chance finding, and replication will be explored in a fully powered randomised controlled trial (RCT). TRIAL REGISTRATION ISRCTN94091479.
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Affiliation(s)
- Simon Gilbody
- Department of Health Sciences, University of York, York, United Kingdom
- Hull York Medical School, University of York, York, United Kingdom
| | | | - Dean McMillan
- Department of Health Sciences, University of York, York, United Kingdom
- Hull York Medical School, University of York, York, United Kingdom
| | | | - Della Bailey
- Department of Health Sciences, University of York, York, United Kingdom
| | - Samantha Gascoyne
- Department of Health Sciences, University of York, York, United Kingdom
| | - Claire Sloan
- Department of Health Sciences, University of York, York, United Kingdom
| | - Lauren Burke
- Department of Health Sciences, University of York, York, United Kingdom
| | - Peter Coventry
- Department of Health Sciences, University of York, York, United Kingdom
| | - Suzanne Crosland
- Department of Health Sciences, University of York, York, United Kingdom
| | | | - Andrew Henry
- Department of Health Sciences, University of York, York, United Kingdom
- Tees, Esk and Wear Valleys NHS FT, Research & Development, Flatts Lane Centre, Middlesbrough, United Kingdom
| | - Catherine Hewitt
- Department of Health Sciences, University of York, York, United Kingdom
| | - Kalpita Joshi
- Department of Health Sciences, University of York, York, United Kingdom
| | - Eloise Ryde
- Department of Health Sciences, University of York, York, United Kingdom
- Tees, Esk and Wear Valleys NHS FT, Research & Development, Flatts Lane Centre, Middlesbrough, United Kingdom
| | - Leanne Shearsmith
- Leeds Institute of Health Sciences, University of Leeds, Leeds, United Kingdom
| | | | - Rebecca Woodhouse
- Department of Health Sciences, University of York, York, United Kingdom
| | - Andrew Clegg
- Leeds Institute of Health Sciences, University of Leeds, Leeds, United Kingdom
| | | | - Andrew J. Hill
- Leeds Institute of Health Sciences, University of Leeds, Leeds, United Kingdom
| | - Karina Lovell
- Division of Nursing, Midwifery & Social Work, University of Manchester, Manchester, United Kingdom
| | - Sarah Dexter Smith
- Tees, Esk and Wear Valleys NHS FT, Research & Development, Flatts Lane Centre, Middlesbrough, United Kingdom
| | | | - David Ekers
- Department of Health Sciences, University of York, York, United Kingdom
- Tees, Esk and Wear Valleys NHS FT, Research & Development, Flatts Lane Centre, Middlesbrough, United Kingdom
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