Received: 6 January 2022
Accepted: 23 March 2022
First Online: 4 April 2022
: The ChiCo study followed ethical regulations [CitationRef removed] and only anonymised data was provided for use in this study. The Macquarie University Human Research Ethics Committee provided a waiver to use the ChiCo data without further ethical review.
: Not applicable.
: AK is an Associate Editor, and SDF is Co-Editor-in-Chief, of Chiropractic & Manual Therapies. The editorial management system automatically blinded them both from the submitted manuscript, and neither had any part in the editorial or peer-review process of this manuscript. The other authors declare that they have no competing interests.