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CORE-Kids: a protocol for the development of a core outcome set for childhood fractures

Marson, Ben Arthur; Marson, Ben; Manning, Joseph C; James, Marilyn; Craxford, Simon; Deshmukh, Sandeep; Ollivere, Benjanmin


Ben Arthur Marson

Ben Marson

Joseph C Manning

Professor of Health Economics

Simon Craxford

Sandeep Deshmukh



Limb fractures in children are common yet there are few trials that compare treatments for these injuries. There is significant heterogeneity in the outcomes reported in the paediatric orthopaedic literature, which limits the ability to compare study results and draw firm conclusions. The aim of the CORE-Kids Study is to develop a core outcome set for use in research studies of childhood limb fractures. A core outcome set will provide a minimum set of outcomes to be measured in all trials to minimise the heterogeneity of outcomes reported and minimise reporting bias. A core outcome set ensures that outcomes are reported that are relevant to families as well as clinicians. The core outcome set will include additional upper and lower limb modules.


The development of the core outcome set will require four phases to evaluate:

What are the outcomes that are relevant to professionals?

What are the outcomes that are relevant to families?

What are the most important of these outcomes?

Which outcomes should be included in the core outcome set?

This will be completed through a systematic review of trials to identify the outcomes domains that are relevant to trialists. A series of semi-structured interviews will be completed with families to identify the outcome domains that are relevant to families. These outcome domains will be used in a three-round Delphi Study to analyse the importance of these outcome domains to a range of stakeholders including parents, clinicians and researchers. Following this, the core outcome set will be decided at a consensus meeting.

Ethics and dissemination

Ethical approval has been awarded HRA/REC IRAS number 262503. Date of approval 06/08/2019. Dissemination will be through scientific literature and international societies.

Trial registration

Core Outcome Measures in Effectiveness Trials Initiative, registration number: 1274. Date of registration 13/12/2018.

PROSPERO registration number CRD42018106605.


Marson, B. A., Marson, B., Manning, J. C., James, M., Craxford, S., Deshmukh, S., & Ollivere, B. (2020). CORE-Kids: a protocol for the development of a core outcome set for childhood fractures. BMJ Open, 10(2),

Journal Article Type Article
Acceptance Date Dec 20, 2019
Online Publication Date Feb 28, 2020
Publication Date Mar 28, 2020
Deposit Date Dec 20, 2019
Publicly Available Date Jan 8, 2020
Journal BMJ Open
Electronic ISSN 2044-6055
Publisher BMJ Publishing Group
Peer Reviewed Peer Reviewed
Volume 10
Issue 2
Article Number e036224
Keywords General Medicine
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