Footnotes

• Contributors Both authors contributed to the writing of the manuscript.

• Funding This research was supported by the National Institute for Health Research (NIHR) Applied Research Collaboration Oxford and Thames Valley at Oxford Health NHS Foundation Trust. TRF also receives funding from the NIHR Community Healthcare MedTech and In Vitro Diagnostics Co-operative at Oxford Health NHS Foundation Trust (MIC-2016-018).

• Disclaimer The views expressed in this publication are those of the authors and not necessarily those of the National Health Service, the NIHR or the Department of Health and Social Care. SF is additionally funded by the Wellcome Trust (202836/Z/16/Z).

• Competing interests Both authors have previously published research relating to the development and validation of risk prediction tools, including a suicide risk prediction tool for individuals with severe mental illness (OxMIS).

• Provenance and peer review Not commissioned; externally peer reviewed.

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