About the Authors

Matt Boyd

Affiliation Adapt Research Ltd, Wellington, New Zealand

Michael G. Baker

Affiliation Department of Public Health, University of Otago, Wellington, New Zealand

Osman D. Mansoor

Affiliation 39 Mortimer Tce, Wellington, New Zealand

Giorgi Kvizhinadze

Affiliation Department of Public Health, University of Otago, Wellington, New Zealand

Nick Wilson

nick.wilson@otago.ac.nz

Affiliation Department of Public Health, University of Otago, Wellington, New Zealand

Competing Interests

The first author (MB) is the sole employee (and owner) of Adapt Research Ltd. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: NW M. Boyd M. Baker OM. Formal analysis: M. Boyd GK. Investigation: M. Boyd GK. Resources: NW. Visualization: M. Boyd NW GK. Writing – original draft: M. Boyd NW. Writing – review & editing: NW M. Boyd M. Baker OM GK.