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Ball S, Reardon T, Creswell C, Taylor L, Brown P, Ford T, Gray A, Hill C, Jasper B, Larkin M, Macdonald I, Morgan F, Pollard J, Sancho M, Sniehotta FF, Spence SH, Stainer J, Stallard P, Violato M, Ukoumunne OC. Statistical analysis plan for a cluster randomised controlled trial to compare screening, feedback and intervention for child anxiety problems to usual school practice: identifying Child Anxiety Through Schools-identification to intervention (iCATS-i2i). Trials 2024; 25:62. [PMID: 38233861 PMCID: PMC10795300 DOI: 10.1186/s13063-023-07898-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/19/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND The Identifying Child Anxiety Through Schools-identification to intervention (iCATS-i2i) trial is being conducted to establish whether 'screening and intervention', consisting of usual school practice plus a pathway comprising screening, feedback and a brief parent-led online intervention (OSI: Online Support and Intervention for child anxiety), bring clinical and health economic benefits compared to usual school practice and assessment only - 'usual school practice', for children aged 8-9 years in the following: (1) the 'target population', who initially screen positive for anxiety problems according to a two-item parent-report child anxiety questionnaire - iCATS-2, and (2) the 'total population', comprising all children in participating classes. This article describes the detailed statistical analysis plan for the trial. METHODS AND DESIGN iCATS-i2i is a definitive, superiority, pragmatic, school-based cluster randomised controlled trial (with internal pilot), with two parallel groups. Schools are randomised 1:1 to receive either screening and intervention or usual school practice. This article describes the following: trial objectives and outcomes; statistical analysis principles, including detailed estimand information necessary for aligning trial objectives, conduct, analyses and interpretation when there are different analysis populations and outcome measures to be considered; and planned main analyses, sensitivity and additional analyses. TRIAL REGISTRATION ClinicalTrials.gov ISRCTN76119074. Registered on 4 January 2022.
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Affiliation(s)
- Susan Ball
- National Institute for Health and Care Research (NIHR) Applied Research Collaboration (ARC) South West Peninsula (PenARC), Department of Health and Community Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, UK.
| | - Tessa Reardon
- Departments of Experimental Psychology and Psychiatry, University of Oxford, Oxford, UK
| | - Cathy Creswell
- Departments of Experimental Psychology and Psychiatry, University of Oxford, Oxford, UK
- Oxford NHS Foundation Trust, Oxford, UK
| | - Lucy Taylor
- Departments of Experimental Psychology and Psychiatry, University of Oxford, Oxford, UK
- Oxford NHS Foundation Trust, Oxford, UK
| | - Paul Brown
- Bransgore C of E Primary School, Christchurch, UK
| | - Tamsin Ford
- University of Cambridge and Cambridge and Peterborough Foundation Trust, Cambridge, UK
| | - Alastair Gray
- Nuffield Department of Population Health, Health Economics Research Centre, University of Oxford, Oxford, UK
| | - Claire Hill
- School of Psychology & Clinical Language Sciences, University of Reading, Reading, UK
| | - Bec Jasper
- Parents and Carers Together, Suffolk, UK
| | - Michael Larkin
- Life and Health Sciences, Aston University, Birmingham, UK
| | | | | | - Jack Pollard
- Nuffield Department of Population Health, Health Economics Research Centre, University of Oxford, Oxford, UK
- UK Health Security Agency, HCAI, Fungal, AMR, AMU and Sepsis Division, London, UK
| | | | - Falko F Sniehotta
- NIHR Policy Research Unit Behavioural Science, Newcastle University, Newcastle upon Tyne, UK
- Division of Public Health, Social and Preventive Medicine, Center for Preventive Medicine and Digital Health (CPD), Universitätsmedizin Mannheim, Heidelberg University, Heidelberg, Germany
| | - Susan H Spence
- School of Applied Psychology and Australian Institute of Suicide Research and Prevention, Griffith University, Brisbane, Australia
| | | | | | - Mara Violato
- Nuffield Department of Population Health, Health Economics Research Centre, University of Oxford, Oxford, UK
| | - Obioha C Ukoumunne
- National Institute for Health and Care Research (NIHR) Applied Research Collaboration (ARC) South West Peninsula (PenARC), Department of Health and Community Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, UK
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