A primary school research study to establish whether Social Stories™ can improve social and emotional health in children with autism spectrum disorder

ISRCTN ISRCTN11634810
DOI https://doi.org/10.1186/ISRCTN11634810
Secondary identifying numbers 40949
Submission date
08/04/2019
Registration date
23/04/2019
Last edited
19/12/2024
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English Summary

Current plain English summary as of 04/07/2020:
Background and study aims
Children with autistic spectrum disorder (ASD) have a higher prevalence of mental health problems than typically developing children, including anxiety and low mood, disruptive, and repetitive behaviours. Research shows that severe social difficulties represent a cost to the NHS and social care across childhood and adulthood (NICE, 2013; National Audit Office, 2009). Social Stories™ are purported to promote calmer classrooms with improved learning/better integration in special and mainstream education settings, and improved social behaviours. Using Social Stories™, children with ASD have shown improvements across a range of behaviours including social interaction, decision making, reduced disruptive behaviours, tantrums and frustration. The aim of this study is to find out whether Social Stories™ can improve social responsiveness in children with ASD in primary schools.

Who can participate?
Children aged 4-11 who attend a school in Yorkshire and Humber and who have a diagnosis of ASD and daily challenging behaviour

What does the study involve?
Parents and teachers complete questionnaires at three times: at the beginning of the study (baseline), six weeks into the study and six months into the study. These questionnaires collect information about demographics, the social responsiveness of the child, quality of life and health resource use. After the baseline questionnaires have been completed for all participants at the school, the school is randomly assigned to either the Social Stories™ intervention or to the control arm (which is care as usual (CAU) by the school). Assignment is decided at random by a computer and children receive all other treatment or support as usual regardless of allocation. If the school gets allocated to the intervention, a teacher is trained to write and read a Social Story™ to the participating child at least 6 times in 4 weeks. If the school is allocated to the control group, the school continues supplying the care they have been given. However, once all the data has been collected from CAU schools (after the 6 month questionnaires have been completed) the Social Stories™ training and manual are offered to CAU schools and parents.

What are the possible benefits and risks of participating?
Using the Social Stories™ may help the child with their behaviour. Participants are offered free workshops on the writing and use of Social Stories™ either as part of the intervention group or as part of the control group after data collection is completed. As a thank you for taking part the families will also receive a £20 voucher. Some parents may find talking about autism distressing. Some children may not want to read or be involved with Social Stories™. If at any time a participating child feels that the actual or perceived distress is too great they can withdraw from the study.

Where is the study run from?
Primary schools across Yorkshire and Humber.

When is the study starting and how long is it expected to run for?
July 2018 to May 2022

Who is funding the study?
National Institute for Health Research (NIHR) (UK)

Who is the main contact?
1. Dr Jane Blackwell
Jane.Blackwell2@nhs.net
2. Dr Kerry Bell
Kerry.Bell@york.ac.uk
3. Dr Catarina Teige
c.teige@nhs.net
4. Prof. Barry Wright
Barry.Wright1@nhs.net


Previous plain English summary:
Background and study aims
Children with autistic spectrum disorder (ASD) have a higher prevalence of mental health problems than typically developing children, including anxiety and low mood, disruptive, and repetitive behaviours. Research shows that severe social difficulties represent a cost to the NHS and social care across childhood and adulthood (NICE, 2013; National Audit Office, 2009). Social Stories™ are purported to promote calmer classrooms with improved learning/better integration in special and mainstream education settings, and improved social behaviours. Using Social Stories™, children with ASD have shown improvements across a range of behaviours including social interaction, decision making, reduced disruptive behaviours, tantrums and frustration. The aim of this study is to find out whether Social Stories™ can improve social responsiveness in children with ASD in primary schools.

Who can participate?
Children aged 4-11 who attend a school in Yorkshire and Humber and who have a diagnosis of ASD and daily challenging behaviour

What does the study involve?
Parents and teachers complete questionnaires at three times: at the beginning of the study (baseline), six weeks into the study and six months into the study. These questionnaires collect information about demographics, the social responsiveness of the child, quality of life and health resource use. After the baseline questionnaires have been completed for all participants at the school, the school is randomly assigned to either the Social Stories™ intervention or to the control arm (which is care as usual (CAU) by the school). Assignment is decided at random by a computer and children receive all other treatment or support as usual regardless of allocation. If the school gets allocated to the intervention, a teacher is trained to write and read a Social Story™ to the participating child at least 6 times in 4 weeks. If the school is allocated to the control group, the school continues supplying the care they have been given. However, once all the data has been collected from CAU schools (after the 6 month questionnaires have been completed) the Social Stories™ training and manual are offered to CAU schools and parents.

What are the possible benefits and risks of participating?
Using the Social Stories™ may help the child with their behaviour. Participants are offered free workshops on the writing and use of Social Stories™ either as part of the intervention group or as part of the control group after data collection is completed. As a thank you for taking part the families will also receive a £20 voucher. Some parents may find talking about autism distressing. Some children may not want to read or be involved with Social Stories™. If at any time a participating child feels that the actual or perceived distress is too great they can withdraw from the study.

Where is the study run from?
Child Oriented Mental health Intervention Centre (COMIC) (UK)

When is the study starting and how long is it expected to run for?
July 2018 to December 2021

Who is funding the study?
National Institute for Health Research (NIHR) (UK)

Who is the main contact?
1. Dr Catarina Teige
c.teige@nhs.net
2. Prof. Barry Wright
barry.wright1@nhs.net

Contact information

Dr Jane Blackwell
Scientific

COMIC research team
IT centre
Innovation Way
Science Park
Heslington
YO10 5NP
United Kingdom

Phone +44 (0)1904 294244
Email Jane.blackwell2@nhs.net
Prof Barry Wright
Scientific

COMIC research team
IT centre
Innovation Way
Science Park
Heslington
YO10 5NP
United Kingdom

Phone +44 (0)1904 294244
Email barry.wright1@nhs.net

Study information

Study designRandomized; Both; Design type: Treatment, Education or Self-Management, Qualitative
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)School
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details to request a patient information sheet
Scientific titleAutism Spectrum Social Stories™ In Schools Trial 2 (ASSSIST2)
Study acronymASSSIST2
Study hypothesisThis study is a randomised controlled trial (cluster randomised by school) to establish whether Social Stories™ are clinically and cost-effective in improving child social impairment, reducing challenging behaviour and improving social and emotional health in children with ASD in primary schools.

Hypothesis: The researchers hypothesise that Social Stories™ delivered in a school setting (>=6 times in a 4 week period) compared with the school’s standard care program will have a greater benefit to social and emotional health in children with autism spectrum disorder.
Ethics approval(s)1. Approved 03/09/2018, Department of Health Sciences' Research Governance Committee (HSRGC) (University of York, Heslington, York, YO10 5DD; +44 (0)1904 323253; stephen.holland@york.ac.uk), ref: HSRGC/2018/286/D
2. Approved 24/07/2019, HRA and Health and Care Research Wales (HCRW) (Health Research Authority, Ground Floor, Skipton House, 80 London Road, London, SE1 6LH; hra.approval@nhs.net; approvals@wales.nhs.uk), ref: 19/NE/0237
ConditionChildhood autism
InterventionThe trial design is a cluster randomised controlled trial with an internal pilot comparing the Social Story™ intervention with care as usual. Trial participants are 4-11-year-old primary school children with a diagnosis of an autism spectrum disorder. The planned sample size is 278 and the primary follow-up will be 6 months post randomisation.

Social Stories intervention
Participating children allocated to the intervention group will have a Social Story™ delivered to them by a teacher or TA professionally trained in Social Stories™ (the interventionist) for a period of approximately 4 weeks alongside their usual care which is likely to vary between schools. The interventionist will deliver the Social Story™ at least 6 times in this 4-week period. The Social Stories™ will be delivered by an educational professional (the interventionist) who is employed by each school allocated to the intervention arm. The interventionist will attend a Social Stories™ training session with our research team providing information on their design and implementation. The schools randomised to the intervention will also be provided with a Social Stories™ training manual. Parents of children randomised to the intervention arm will also be invited to attend these sessions to help with story construction (though this is not a requirement for participation). During the training session the interventionist will construct a Social Story™ with input from the research team.

Care as usual
The children in the comparator arm will receive care as usual (CAU) only. CAU will vary between schools but is likely to include a range of classroom interventions built into a child’s learning plan (e.g. picture exchange communication system). The researchers will collect information as to what care has been received in both groups systematically at all timepoints using a resource use case report form. Once the last of the data has been collected from CAU schools (after 6 months), the training and manual described above will be offered to the parents and teachers who are interested.

The trial period is 42 months. The researchers collect data at baseline, 6 weeks after randomisation, and 6 months after randomisation for both treatment arms. There will be an internal pilot study which will run for 10 months to examine the feasibility of recruitment. The pilot period will run for 10 months, at which point the researchers expect to have recruited n=110 of which one third (n=44) will have reached the primary endpoint. Stop/Go criteria based on 100% of the recruitment target will be used to assess the feasibility of continuing the trial. There will be a nested economic evaluation, process evaluation, qualitative component and fidelity assessment.
Intervention typeBehavioural
Primary outcome measureChild social responsiveness measured using the Social Responsiveness Scale, Second Edition (SRS-2)
Secondary outcome measures1. Challenging behaviours measured using a bespoke goal-based outcome measure (validated with blinded observation of 20% of participants in a classroom setting by research assistants at 6 weeks and at 6 months) at 6 months
2. Social and emotional health measured using Revised Children Anxiety and Depression Scale (RCADS) short form at 6 months
3. Cost-effectiveness of Social Stories™ measured using a bespoke resource use questionnaire at 6 months
4. Health-related quality of life measured using a bespoke health care resource use questionnaire and EQ-5D-Y proxy at 6 months
5. Parental stress levels measured using Parental Stress Index (PSI) short form at 6 months
6. Classroom attendance and out of area placements measured using a bespoke questionnaire to determine current school care/education plan interventions and support provided to the child in class at 6 months
7. Sustainability of Social Stories™ measured using a bespoke Social Stories™ sustainability questionnaire at 6 months
8. Treatment preference measured using a bespoke preference questionnaire prior to randomisation at baseline
9. Session delivery measured using a bespoke Social Stories™ session log capturing frequency, length and times; problems or adverse events in the context of delivery at 6 weeks
Overall study start date03/07/2018
Overall study end date31/05/2022

Eligibility

Participant type(s)Patient
Age groupChild
Lower age limit4 Years
Upper age limit11 Years
SexBoth
Target number of participantsPlanned Sample Size: 278; UK Sample Size: 278
Total final enrolment249
Participant inclusion criteria1. Aged 4-11 years
2. Attends a school in Yorkshire and Humber
3. Has a research diagnostic criteria diagnosis of ASD and daily challenging behaviour
Participant exclusion criteria1. The school has used Social Stories™ for the child in the current or preceding school term
2. The child or interventionist teacher has taken part in the ASSSIST feasibility study. The study will not exclude schools that have taken part
Recruitment start date01/10/2018
Recruitment end date31/05/2021

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centres

West Specialist Inclusive Learning Centre
4 Town Street
Pudsey
LS28 6HL
United Kingdom
Newlands Primary School
Wakefield Road
Normanton
WF6 1BB
United Kingdom
Castleton Primary School
Green Lane
Leeds
LS12 1JZ
United Kingdom
Ashfield Primary School
Ceston Lane
Otley
LS21 2DF
United Kingdom
Victoria Primary School
Cartmel Road
Keighley
BD21 2RD
United Kingdom
Thornton Primary School
Thornton Road
Bradford
BD13 3NN
United Kingdom
High Crags Primary Leadership Academy
Crag Road
Shipley
BD18 2ES
United Kingdom
Lacewood Primary School
Carr Head Lane
Rotherham
S63 8DA
United Kingdom
Kirk Sandall Infants and Juniors Schools
Queen Mary Crescent
Doncaster
DN3 1JT
United Kingdom
Chiltern Primary School Hull
Chiltern Street
Hull
HU3 3PL
United Kingdom
St Wilfrid's Roman Catholic Primary School
Monkgate
York
YO31 7PB
United Kingdom
Embsay Church of England Primary School
Pasture Road
Skipton
BD23 6RH
United Kingdom
Oatlands Community Junior School
Beechwood Grove
Harrogate
HG2 8QP
United Kingdom
Mowbray School
Masham Road
Bedale
DL8 2SD
United Kingdom
Luttons Community Primary School
West Lutton
Malton
YO17 8TF
United Kingdom
Aspin Park Academy
Wetherby Road
Knaresborough
HG5 8LQ
United Kingdom
Roecliffe Church of England Primary School
Roecliffe
York
YO51 9NB
United Kingdom
Riverside Community Primary School
Wetherby Road
Tadcaster
LS24 9JN
United Kingdom
Thomas Hinderwell Primary Academy
Seamer Road
Scarborough
YO12 4HF
United Kingdom
Sutton in Craven CP School
Bridge Road
Keighley
BD20 7ES
United Kingdom
Saint Mary's Catholic Primary Voluntary Academy
Wellington Street
Grimsby
DN32 7JX
United Kingdom
St Augustine Webster Catholic Voluntary Academy
Bailden Road
Scunthorpe
DN15 8BU
United Kingdom
Signhills Infant Academy and Signhills Academy
33 Hardys Road
Cleethorpes
DN35 0DL
United Kingdom
Lisle Marsden Church of England Primary Academy
Lansdowne Avenue
Grismby
DN32 0DF
United Kingdom
Castle Academy
Station Road
Conisbrough
Doncaster
DN12 3DB
United Kingdom
Brinsworth Whitehill Primary School
Howlett Dr
Brinsworth
S60 5HT
United Kingdom
East Dene Primary
Doncaster Rd
Rotherham
S65 2DF
United Kingdom
Scawsby Saltersgate Infant School
Windsor Walk
Doncaster
DN5 8NQ
United Kingdom
Seamer and Irton Community Primary School
Denison Avenue
Seamer
Scarborough
YO12 4QX
United Kingdom
Whitley and Eggborough Community Primary School
Learning Lane
Goole
DN14 0WE
United Kingdom
Friarage Community Primary School
Friargate
Scarborough
YO11 1HS
United Kingdom
Cockburn Haig Road Academy
Haigh Road
Rothwell
Leeds
LS26 0NQ
United Kingdom
Manston St James Primary Academy
Sandbed Lane
Leeds
LS15 8JH
United Kingdom
Windmill Church of England Primary School
Upper Batley Lane
Batley
WF17 0NP
United Kingdom
Oxspring Primary School
Sheffield Road
Oxspring
Sheffield
S36 8YW
United Kingdom
Athelstan Primary School
Richmond Park Way
Sheffield
S13 8HH
United Kingdom
Wetwang Church of England Primary School
21 Pulham Lane
Driffield
YO25 9XT
United Kingdom
Stokesley Primary Academy
5 Springfield
Stokesley
Middlesborough
TS9 5EW
United Kingdom
Our Lady of Sorrows Catholic Voluntary Academy
Mere Lane
Armthorpe
Doncaster
DN3 2DB
United Kingdom
St Martins C of E Primary School
Holbeck Hill
Scarborough
YO11 3BW
United Kingdom
Hunter's Bar Junior School
371 Sharrow Vale
Sheffield
S11 8ZG
United Kingdom
Bishopthorpe Infants School
Sim Balk Lane
Bishopthorpe
York
YO23 2QQ
United Kingdom
Southcoates Primary School
Southcoates Lane
Hull
HU9 3TW
United Kingdom
Braeburn Primary and Nursery Academy
Eastfield
Scarborough
YO11 3LG
United Kingdom
East Whitby Academy
Stainsacre Lane
Whitby
YO22 4HU
United Kingdom
North Cave C of E Primary School
Station Road
North Cave
Hull
HU15 2LA
United Kingdom
Pocklington Juniors
65 Kirkland Street
Pocklington
York
YO42 2BX
United Kingdom
Beverley Minster Primary School
St Gile's Croft
Beverley
HU17 8LA
United Kingdom
Cawthorne Primary School
Taylor Hill
Cawthorne
Barnsley
S75 4HB
United Kingdom
Queens Road Academy
Queens Road
Barnsley
S71 1AR
United Kingdom
Bay Primary School
St Alan Road
Bridlington
YO16 7SZ
United Kingdom
Brompton Community Primary School
Station Road
Brompton
Northallerton
DL6 2RE
United Kingdom
Market Weighton Infant School
Princess Road
Market Weighton
YO43 3EY
United Kingdom
Colburn Community Primary School
Colburn Lane
Colburn
DL9 4LS
United Kingdom
Brandesburton Primary School
Main Street
Brandesburton
East Yorkshire
YO25 9RG
United Kingdom
Tees, Esk & Wear Valley NHS Foundation Trust
York
YO30 4XT
United Kingdom
Humber Teaching NHS Foundation Trust
Hull
HU10 6ED
United Kingdom
Bradford District Care NHS Foundation Trust
Bradford
BD18 3LD
United Kingdom
Harrogate and District NHS Foundation Trust
Harrogate
HG2 7SX
United Kingdom
Sheffield Children's NHS Foundation Trust
Sheffield
S10 2TH
United Kingdom
Thorpe Primary School
Dolphin Lane
Thorpe
Wakefield
WF3 3DG
United Kingdom
Glasshoughton Infant Academy
Newfield Avenue
Castleford
WF10 4BH
United Kingdom
Shire Oak CE Primary School
Wood Lane
Headingley
Leeds
LS6 2DT
United Kingdom
St. Joseph’s Catholic Primary School
Barleyfields Road
Wetherby
West Yorkshire
LS22 6PR
United Kingdom
The John Curwen Cooperative Primary
Leeds Old Road
Heckmondwike
Kirklees
WF16 9BB
United Kingdom
Kirk Sandall Infants and Juniors Schools
Queen Mary Crescent
Kirk Sandall
Doncaster
DN3 1JT
United Kingdom
Newman School
East Bawtry Road
Rotherham
S60 3LX
United Kingdom
Carterknowle Junior School
Carterknowle Road
Sheffield
S7 2DY
United Kingdom
Dobcroft Junior and Infant School
Pingle Road
Sheffield
S7 2LN
United Kingdom
St Marie's School a Catholic Voluntary Academy
Fullwood Road
Sheffield
S10 3DQ
United Kingdom
Hatfield Academy - Astrea Academy Trust
Hatfield House Lane
Sheffield
S5 6HY
United Kingdom
Pocklington C.E (VC) Infant School
Maxwell Road
Pocklington
York
YO42 2HE
United Kingdom
Ralph Butterfield Primary School
Station Road
Haxby
York
YO32 3LS
United Kingdom
Burton Green Primary School
Burton Green
York
YO30 6JE
United Kingdom
Clifton Green Primary
Water Lane
York
YO30 6JA
United Kingdom
Pickering Community Junior School
Middleton Road
Pickering
YO18 8AJ
United Kingdom
Kettlesing Ripley and Beckwithshaw Primary Schools
Kettlesing
Harrogate
HG3 2LB
United Kingdom
Kirk Fenton Parochial Primary School
Main Street
Church Fenton
Tadcaster
LS24 9RF
United Kingdom
St Mary's Catholic Primary School
Knaresborough Tentergate Road
Knaresborough
HG5 9BG
United Kingdom
Grove Road Community Primary School
Grove Road
Harrogate
HG3 3RW
United Kingdom
Burton Leonard Church of England (VC) Primary School
Burton Leonard
Harrogate
HG3 3RW
United Kingdom
Holy Trinity Junior and Infant Schools
Church Lane
Ripon
North Yorkshire
HG4 2ES
United Kingdom
Woodlesford Primary School
Church Street
Leeds
LS26 8RD
United Kingdom
Outwood Junior Academy Brumby
Queensway
Scunthorpe
DN16 2HY
United Kingdom
Woolley Wood Primary
Chaucer Road
Sheffield
S5 9QN
United Kingdom
Leeming RAF Community Primary School
Gatenby
North Allerton
DL7 9NQ
United Kingdom
St Oswald's CE Primary School
Heslington Lane
Fulford
York
YO10 4LX
United Kingdom
Stamford Bridge Primary School
5-7 Church Road
Stamford Bridge
YO41 1BP
United Kingdom
Myrtle Park Primary School
Ash Terrace
Bingley
BD16 1HB
United Kingdom
Crossflatts Primary School
Morton Lane
Crossflatts
Bingley
BD16 2EP
United Kingdom
St John Fisher Primary School
Spring Water Avenue
Sheffield
S12 4HJ
United Kingdom
Norton Community Primary School
Grove Street
Norton-on-Derwent
Malton
YO17 9BG
United Kingdom
Sutton Park Primary School
Marsdale
Hull
HU7 4AH
United Kingdom
Acre Heads Primary School
Welbourn Walk
Norland Avenue
Hull
HU4 7ST
United Kingdom
Knavesmire Primary School
Trafalgar St
South Bank
York
YO23 1HY
United Kingdom
Thrunscoe Primary and Nursery Academy
Trinity Rd
Cleethorpes
DN35 8UL
United Kingdom
North Ridge Community
Tenter Balk Ln
Adwick le Street
Doncaster
DN6 7EF
United Kingdom
Spring Cottage Primary School
Dressay Grove
Hull
HU8 9JH
United Kingdom
Greenfield Primary School
Cherry Tree St
Hoyland
Barnsley
S74 9RG
United Kingdom
Bradfield Dungworth Primary School
Dungworth Green
Sheffield
S6 6HE
United Kingdom
The Levett School
Melton Road
Spotbrough
DN5 7SB
United Kingdom
Penistone St Johns
High Street
Penistone
Barnsley
S36 6FS
United Kingdom
Green Lane Primary School
Green Lane
Bradford
BD8 8HT
United Kingdom
Rowan School
4 Durvale Court
Sheffield
S17 3PT
United Kingdom
Mosborough, Halfway Infants and Juniors
New School Road
Mosborough
Sheffield
S20 5ES
United Kingdom
Kelford School
Oakdale Road
Kimberworth
Rotherham
S61 2NU
United Kingdom
Meersbrook Bank Primary School
Derbyshire Lane
Meersbrook
Sheffield
S8 9EH
United Kingdom
Stocksbridge Nursery Infant School
Pot House Lane
Stocksbridge
Sheffield
S36 1EJ
United Kingdom
Alverton Community Primary School
Mount Road
Northallerton
DL6 1RB
United Kingdom
Holgate Meadows and Heritage Park
Norfolk Park Road
Sheffield
S2 2RU
United Kingdom

Sponsor information

Leeds and York Partnership NHS Foundation Trust
Hospital/treatment centre

c/o Alison Thompson
Head of Research & Development
Leeds
LS15 8ZB
England
United Kingdom

Phone +44 (0)11385 52360
Email athompson11@nhs.net
ROR logo "ROR" https://ror.org/00n635c12

Funders

Funder type

Government

NIHR Evaluation, Trials and Studies Co-ordinating Centre (NETSCC); Grant Codes: 16/111/91

No information available

Results and Publications

Intention to publish date31/12/2022
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryStored in non-publicly available repository
Publication and dissemination planThe research team has a strong track record of successful dissemination of work funded by the NIHR and other funding bodies. They will begin to consider their dissemination strategy at an early stage of the project. They will publish the results of each phase of the study in high profile mainstream and specialist science journals, such as the British Journal of Psychiatry, the Journal of Child Psychology and Psychiatry, Clinical Child Psychology and Psychiatry and Journal of Autism and Developmental Disorders, and intend to publish main outcomes by 2021/2022.
IPD sharing planThe datasets generated during and/or analysed during the current study will be stored in a non-publically available repository and will be included in the subsequent results publication.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol article protocol 12/06/2020 15/06/2020 Yes No
Abstract results 12/07/2022 No No
HRA research summary 20/09/2023 No No
Results article 31/08/2024 02/09/2024 Yes No
Results article 17/12/2024 19/12/2024 Yes No

Additional files

36567 Abstract.pdf

Editorial Notes

19/12/2024: Publication reference added.
02/09/2024: Publication reference added.
20/09/2023: A link to the HRA research summary was added.
12/07/2022: An abstract was uploaded as an additional file.
24/05/2021: The final enrolkment number has been added.
07/05/2021: The trial participating centres Stocksbridge Nursery Infant School, Alverton Community Primary School, Holgate Meadows and Heritage Park were added.
20/04/2021: The recruitment end date was changed from 30/04/2021 to 31/05/2021.
07/04/2021: Rowan School, Mosborough, Halfway Infants and Juniors, Kelford School, and Meersbrook Bank Primary School were added as trial participating centres.
16/03/2021: The recruitment end date has been changed from 31/03/2021 to 30/04/2021.
01/03/2021: Bradfield Dungworth Primary School, The Levett School, Penistone St Johns and Green Lane Primary School were added as trial participating centres.
02/02/2021: The trial participating centres Thrunscoe Primary and Nursery Academy, North Ridge Community, Spring Cottage Primary School, Greenfield Primary School were added.
07/12/2020: The following changes have been made:
1. The recruitment end date has been changed from 31/10/2020 to 31/03/2021.
2. The overall trial end date has been changed from 31/12/2021 to 31/05/2022 and the plain English summary updated accordingly.
3. The intention to publish date has been changed from 31/12/2022 to 31/12/2022.
4. Woodlesford Primary School, Outwood Junior Academy Brumby, Woolley Wood Primary, Leeming RAF Community Primary School, St Oswald's CE Primary School, Stamford Bridge Primary School, Myrtle Park Primay School, Crossflatts Primary School, St John Fisher Primary School, Norton Community Primary School, Sutton Park Primary School, Acre Heads Primary School and Knavesmire Primary School have been added to the trial participating centres.
06/07/2020: The following changes have been made:
1. A scientific contact has been updated.
2. The trial participating centres "Thorpe Primary School", "Glasshoughton Infant Academy", "Shire Oak CE Primary School", "St. Joseph’s Catholic Primary School", "The John Curwen Cooperative Primary", "Kirk Sandall Infants and Juniors Schools", "Newman School", "Carterknowle Junior School", "Dobcroft Junior and Infant School", "St Marie's School A Catholic Voluntary Academy", "Hatfield Academy - Astrea Academy Trust", "Pocklington C.E (VC) Infant School", "Ralph Butterfield Primary School", "Burton Green Primary School", "Clifton Green Primary", "Pickering Community Junior School", "Kettlesing Ripley and Beckwithshaw Primary Schools", "Kirk Fenton Parochial Primary School", "St Mary's Catholic Primary School", "Grove Road Community Primary School", "Burton Leonard Church of England (VC) Primary School", and "Holy Trinity Junior and Infant Schools " have been added.
04/07/2020: The following changes have been made:
1. The ethics approval has been updated.
2. The target number of participants has been changed from "Planned Sample Size: 276; UK Sample Size: 276" to "Planned Sample Size: 278; UK Sample Size: 278".
3. The total target enrolment number has been changed from 276 to 278.
4. The trial participating centres "Signhills Infant Academy and Signhills Academy", "Lisle Marsden Church of England Primary Academy", "Castle Academy", "Brinsworth Whitehill Primary School", "East Dene Primary", "Scawsby Saltersgate Infant School", "Seamer and Irton Community Primary School", "Whitley and Eggborough Community Primary School", "Friarage Community Primary School", "Cockburn Haig Road Academy", "Manston St James Primary Academy", "Windmill Church of England Primary School", "Oxspring Primary School", "Athelstan Primary School", "Wetwang Church of England Primary School", "Stokesley Primary Academy", "Our Lady of Sorrows Catholic Voluntary Academy", "St Martins C of E Primary School", "Hunter's Bar Junior School", "Bishopthorpe Infants School", "Southcoates Primary School", "Braeburn Primary and Nursery Academy", "East Whitby Academy", "North Cave C of E Primary School", "Pocklington Juniors", "Beverley Minster Primary School", "Cawthorne Primary School", "Queens Road Academy", "Bay Primary School", "Brompton Community Primary School", "Market Weighton Infant School", "Colburn Community Primary School", "Brandesburton Primary School", "Tees, Esk & Wear Valley NHS Foundation Trust", "Humber Teaching NHS Foundation Trust", "Bradford District Care NHS Foundation Trust", "Harrogate and District NHS Foundation Trust", and "Sheffield Children's NHS Foundation Trust" have been added.
5. The plain English summary has been updated.
15/06/2020: Publication reference added.