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Article History

Received: 18 May 2023

Accepted: 21 July 2024

First Online: 19 August 2024

Declarations

:

: Professor Julianne Holt-Lunstad is on the Nextdoor Neighbourhood Vitality Board. The other authors declare no conflict of interest in relation to the project. Nextdoor Australia was on the Management Committee of Ending Loneliness Together, an organisation affiliated with Associate Prof Michelle Lim, but this occurred after the close of this study. Non-financial interest in subject matter: Associate Prof Michelle Lim, Prof Ben Smith, Prof Pamela Qualter, and Prof Julianne Holt-Lunstad are unpaid scientific advisory committee members of Ending Loneliness Together in Australia. Prof Julianne Holt-Lunstad is an unpaid scientific advisory member of the Foundation for Social Connection. Associate Prof Michelle Lim and Prof Julianne Holt-Lunstad are both unpaid scientific advisory members of the Global Initiative on Loneliness and Connection. Prof Pamela Qualter, Associate Prof Michelle Lim, and Prof Julianne Holt-Lunstad are unpaid members of World Health Organization Commission to Social Connection Technical Advisory Group.

: The multi-site study was approved by Swinburne University Human Research Ethics Committee (SUHREC: 2020/2615) for data collection in Australia and the UK, and Brigham Young University Human Research Ethics Committee (IRB2020-175) for the USA. This study has received an ethics waiver from University of Manchester as the team did not handle any identifiable data. Full written informed consent was obtained from participants at the time of the baseline assessment by a member of the research team. A copy of the consent form can be obtained by request from the corresponding author.