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Trial registered on ANZCTR


Registration number
ACTRN12622000257763
Ethics application status
Approved
Date submitted
4/02/2022
Date registered
11/02/2022
Date last updated
11/02/2022
Date data sharing statement initially provided
11/02/2022
Type of registration
Prospectively registered

Titles & IDs
Public title
Evaluating the effectiveness of strategies to encourage the adoption of a school-based lunchbox nutrition program
Scientific title
A multi-component dissemination intervention on the adoption rate of a school-based lunchbox nutrition program: A randomised controlled trial
Secondary ID [1] 306346 0
Nil known
Universal Trial Number (UTN)
Trial acronym
Linked study record
Yes, registration record ACTRN12618001731280 describes an earlier effectiveness trial for this intervention conducted by the research team. The effectiveness trial has been conducted and results have been published. This current trial follows on from the effectiveness trial and will be conducted with schools in the Central Coast Local Health District.

Health condition
Health condition(s) or problem(s) studied:
Obesity 325149 0
Condition category
Condition code
Diet and Nutrition 322552 322552 0 0
Obesity
Public Health 322553 322553 0 0
Health promotion/education

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
A randomised controlled trial design will be used to test the effectiveness of a theory-based multi-component dissemination strategy to invite primary schools to implement a lunchbox nutrition program (‘SWAP IT’) among schools located in the Central Coast Local Health District of New South Wales (NSW), Australia, that have not previously implemented the program.

SWAP IT consists of electronic messages sent to parents via usual parent communication channels (parent communication app, newsletter or Facebook), together with classroom resources, and parent booklets. The SWAP IT program aims to improve the contents of children’s lunchboxes by supporting parents/carers to swap what is packed from discretionary (“sometimes”) foods and drinks to core (“everyday”) foods and drinks. SWAP IT has previously been found to be effective at improving the packing of healthy lunchboxes and improving child dietary intake.

Primary schools that have not previously implemented the lunchbox nutrition program will be randomly allocated to one of two study groups: a multi-component intervention group or a minimal intervention control group. The intervention will be delivered over a period of 3 months.

Schools allocated to the intervention group will receive a theoretically-based multi-component dissemination intervention to support schools to register for and adopt the lunchbox nutrition program. At the commencement of the intervention, one program invitation will be disseminated to school principals and key contacts via an email, which will provide an overview of SWAP IT and encourage schools to adopt the program via an online portal. The email will take approximately two minutes to read. Approximately two weeks following the initial email, an eNewsletter will be sent to school principals and key contacts detailing the upcoming health promotion activities for the year, including information on the SWAP IT program and how to register. The eNewsletter will take up to five minutes to read. Schools will be provided with access to the online portal, which will act as a central registration system for schools to register for SWAP IT directly, and access all program resources. The portal will also contain a technical assistance function where principals, school staff and parents can enquire about the SWAP IT program. Following the initial program invitation and eNewsletter, a comprehensive communication strategy, consisting of emails (up to two) with embedded videos, will be disseminated to schools to increase school principal motivation to adopt the SWAP IT program. The emails will be delivered in a staggered approach throughout the intervention period and will consist of educational and motivational videos addressing theoretically identified barriers to nutrition program adoption. The emails will take approx. 2 min to read. Each video is less than 1 min in duration and focusses on a key barrier to implementing SWAP IT. The emails with embedded videos will be sent to intervention schools two weeks apart and will target the school principal or key contact. If a school registers for the program, they will not receive further communication encouraging adoption.

The number of emails sent and received, and video views will be used to monitor the implementation of the intervention.
Intervention code [1] 322778 0
Behaviour
Comparator / control treatment
At the commencement of the study, a program invitation will be disseminated to schools allocated to the control group via an email and eNewsletter, which will provide an overview of SWAP IT and encourage schools to adopt the program via the online portal.
Control group
Active

Outcomes
Primary outcome [1] 330347 0
Adoption will be defined as the number of schools who agree to implement the lunchbox nutrition program (SWAP IT). This will be assessed within schools allocated to the intervention and control group via registrations received from the online portal.
Timepoint [1] 330347 0
Assessed at approximately 6 months after the initial invitation distributed to schools.
Secondary outcome [1] 405899 0
Implementation will be defined as the proportion of schools that implement each component of SWAP IT at 6 months, including the messages, lunchbox nutrition guidelines, school and parent resources. Implementation will be assessed via an online survey with principals or key contacts.
The online survey has been purpose-designed for this study by the research team.
Timepoint [1] 405899 0
Assessed at approximately 6 months after the initial invitation distributed to schools.
Secondary outcome [2] 405900 0
Maintenance of the SWAP IT program will be defined as: (i) number of schools who continue to implement the SWAP IT program after the 6 month intervention period; and (ii) the number of schools who opt out of delivering SWAP IT. Maintenance of the SWAP IT program within schools allocated to the intervention and control group will be assessed through the online portal.
Timepoint [2] 405900 0
Assessed at approximately 6 months after the initial invitation distributed to schools.
Secondary outcome [3] 405901 0
Cost for health promotion staff to deliver the dissemination strategies, including the development and delivery of each strategy to schools allocated to the intervention and control group, will be assessed via internal study records kept by the research team.
Timepoint [3] 405901 0
Assessed at approximately 6 months after the initial invitation distributed to schools.

Eligibility
Key inclusion criteria
Department of Education (DoE) and Independent schools located within the Central Coast Local Health District, who cater for primary school aged children will be invited to participate. Schools who have not implemented the lunchbox nutrition program will be eligible to participate. Schools that use the SkoolBag parent communication app will be eligible. Schools that use an alternative app, Facebook, or other method to communicate with parents will also be eligible.
Minimum age
18 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
Yes
Key exclusion criteria
Schools with secondary students only, schools catering exclusively for children requiring specialist care, schools who have already implemented the lunchbox nutrition program will be ineligible to participate.

Study design
Purpose of the study
Prevention
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Primary schools that are located within Central Coast Local Health District and have not previously implemented the lunchbox nutrition program with serve as the study sample. Prior to invitation to delivery of the first intervention strategy schools will be randomly allocated to either the intervention or control condition. Following the intervention, school principals in both conditions will be sent a study information statement and invitation to participate in the data collection component of the study (i.e. the follow up survey).
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Prior to delivery of the first intervention strategy, an independent statistician will randomise schools, using a computerised random number function, stratified by socio-economic location of the school (given its association with implementation of school nutrition programs) in a 1:1 (intervention: control) ratio.
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?



The people analysing the results/data
Intervention assignment
Other design features
Phase
Not Applicable
Type of endpoint/s
Efficacy
Statistical methods / analysis
Descriptive statistics will be used to describe school characteristics, adoption of the nutrition program, intervention fidelity, acceptability and engagement with the dissemination strategies, intentions, barriers and enablers to adoption and the mechanism by which dissemination strategies may impede or facilitate implementation.

Analyses of trial outcomes will be undertaken under an intention to treat framework. For assessment of school level program adoption, - the primary trial outcome - between group differences will be assessed using logistic regression. First, we will include all schools in the analysis. We will then look at schools that had the SkoolBag parent communication app at the beginning of the study. The model will include a term for treatment group (intervention vs control) and pre-specified covariates prognostic of the outcome. Little, if any, missing primary outcome data is anticipated at follow-up, as program adoption is recorded automatically for all participating schools by the online portal. Nonetheless, we will employ multiple imputation for any missing data in the event that schools withdraw from the study and request that their data is not used. All statistical tests will be 2 tailed with alpha of 0.05.

Recruitment
Recruitment status
Not yet recruiting
Date of first participant enrolment
Anticipated
1/03/2022
Actual
Date of last participant enrolment
Anticipated
30/07/2022
Actual
Date of last data collection
Anticipated
31/10/2022
Actual
Sample size
Target
60
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment postcode(s) [1] 36672 0
2250 - Gosford
Recruitment postcode(s) [2] 36673 0
2251 - Kincumber
Recruitment postcode(s) [3] 36674 0
2256 - Woy Woy
Recruitment postcode(s) [4] 36675 0
2257 - Killcare
Recruitment postcode(s) [5] 36676 0
2258 - Ourimbah
Recruitment postcode(s) [6] 36677 0
2259 - Wyong
Recruitment postcode(s) [7] 36678 0
2260 - Terrigal
Recruitment postcode(s) [8] 36679 0
2261 - The Entrance
Recruitment postcode(s) [9] 36680 0
2262 - Budgewoi
Recruitment postcode(s) [10] 36681 0
2263 - Lake Haven

Funding & Sponsors
Funding source category [1] 310701 0
Government body
Name [1] 310701 0
Hunter New England Population Health
Country [1] 310701 0
Australia
Primary sponsor type
University
Name
The University of Newcastle
Address
University Drive,
Callaghan NSW 2308
Country
Australia
Secondary sponsor category [1] 311920 0
Government body
Name [1] 311920 0
Hunter New England Population Health
Address [1] 311920 0
Locked Bag 10
Wallsend NSW 2287
Country [1] 311920 0
Australia

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 310284 0
Hunter New England Human Research Ethics Committee
Ethics committee address [1] 310284 0
Ethics committee country [1] 310284 0
Australia
Date submitted for ethics approval [1] 310284 0
21/10/2021
Approval date [1] 310284 0
26/10/2021
Ethics approval number [1] 310284 0
06/07/26/4.04

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 117118 0
Dr Courtney Barnes
Address 117118 0
Hunter New England Population Health
Locked Bag 10
Wallsend NSW 2287
Country 117118 0
Australia
Phone 117118 0
+61 2 4924 6678
Fax 117118 0
+61 2 4924 6490
Email 117118 0
Courtney.Barnes@health.nsw.gov.au
Contact person for public queries
Name 117119 0
Courtney Barnes
Address 117119 0
Hunter New England Population Health
Locked Bag 10
Wallsend NSW 2287
Country 117119 0
Australia
Phone 117119 0
+61 2 4924 6678
Fax 117119 0
+61 2 4924 6490
Email 117119 0
Courtney.Barnes@health.nsw.gov.au
Contact person for scientific queries
Name 117120 0
Courtney Barnes
Address 117120 0
Hunter New England Population Health
Locked Bag 10
Wallsend NSW 2287
Country 117120 0
Australia
Phone 117120 0
+61 2 4924 6678
Fax 117120 0
+61 2 4924 6490
Email 117120 0
Courtney.Barnes@health.nsw.gov.au

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
No/undecided IPD sharing reason/comment
No individual participant data for this trial will be available as ethics approval does not cover this. If a request for individual participant data is made and appropriate ethics approvals obtained, such data may be made available in the future.


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
No additional documents have been identified.