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Does offering girls a reward increase the number of vaccination consent forms that are returned? A study to look at whether a future larger study of rewards is feasible

A cluster randomised feasibility study of an adolescent incentive intervention to increase uptake of HPV vaccination among girls

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN72136061
Enrollment
600
Registered
2016-09-26
Start date
2016-07-01
Completion date
Unknown
Last updated
2023-10-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Human papillomavirus (HPV) Infections and Infestations

Interventions

Standard invitation arm: The standard invitation arm comprises adolescents being provided with an information leaflet about the HPV vaccine and a consent form by their school, which th

Sponsors

University College London
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Inclusion criteria at the cluster-level: 1. Secondary schools based in the London boroughs of Enfield, Lambeth and Southwark and who participate in the HPV immunisation programme Inclusion criteria at the individual-level: 2. Adolescent girls attending participating schools 3. Adolescent girls who enter Year 8 in the autumn academic term 4. School staff employed at participating schools 5. Parent/guardians of adolescent girls participating in the trial

Exclusion criteria

Exclusion criteria: Exclusion criteria at the cluster-level: 1. Secondary schools based outside of the London boroughs of Enfield, Lambeth and Southwark 2. Secondary schools not participating in the HPV immunisation programme Exclusion criteria at the individual-level: 3. Adolescent girls not attending participating schools 4. Adolescent girls not in year 8 in the autumn academic term 5. School staff employed at schools not participating in the trial 6. Parents/guardians of adolescent girls not participating in the trial

Design outcomes

Primary

MeasureTime frame
There is no primary outcome as this is a feasibility study. The first outcome that will be assessed is schools’ and parents’ willingness to participate in the study and schools’ willingness to be randomised. Measured by recording number of schools contacted, number who express initial interest and number who participate. Measured at baseline.

Secondary

MeasureTime frame
1. Response rates to questionnaires by parents and girls (assessed by recording number of completed questionnaires returned) 2. Data completeness regarding the proportion of missing data: whether consent form was returned, whether consent was given (reported by schools and reported by parents in brief questionnaire), socio-demographic characteristics (ascertained through brief questionnaire completed and index of multiple deprivation (IMD) score, ascertained through girls’ postcode provided by schools) and all other questionnaire items. 3. Girls’ attitudes towards the incentive offered (assessed through brief questionnaire). 4. Parents’/guardians’ attitudes towards the incentive offered (assessed through brief questionnaire). 5. School staff experiences of participating (ascertained through brief interviews) 6. School staff fidelity to the intervention (ascertained through brief interviews) 7. Detailed description of immunisation processes performed in each school (i.e. what additions to the standard invitation were performed) by the immunisation teams and school staff (ascertained through brief interviews with school staff and informal information provided by immunisation teams) 8. Unintended consequences of the intervention: 8.1. Girls’ perceptions of why incentive was offered (assessed through brief questionnaire) 8.2. Parents’/guardians’ informed decision making (assessed through brief questionnaire, using measure described by Mantzari et al. 2015) 8.3. Girls’ attitudes towards returning future consent forms (assessed through brief questionnaire) 9. Mechanisms of action (assessed through brief girls’ questionnaire) 10. Cost per returned consent form and cost per consent form that is agreeing to vaccination. All information will be collected after vaccinatio

Countries

England, United Kingdom

Contacts

Public ContactLauren Rockliffe

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 10, 2026