About the Authors

Karen Gainey

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Validation, Visualization, Writing – original draft, Writing – review & editing

email@karengainey.com

Affiliation Sydney Health Literacy Lab, School of Public Health, Faculty of Health and Medicine, University of Sydney, New South Wales, Australia

Kirsten McCaffery

Roles Conceptualization, Methodology, Supervision, Validation, Visualization, Writing – review & editing

Affiliation Sydney Health Literacy Lab, School of Public Health, Faculty of Health and Medicine, University of Sydney, New South Wales, Australia

Danielle Muscat

Roles Conceptualization, Formal analysis, Methodology, Supervision, Validation, Visualization, Writing – review & editing

Affiliation Sydney Health Literacy Lab, School of Public Health, Faculty of Health and Medicine, University of Sydney, New South Wales, Australia

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: Karen M. Gainey, Kirsten J. McCaffery and Danielle M. Muscat have completed the International Committee of Medical Journal Editors (ICMJE) uniform disclosure form at http://www.icmje.org/coi_disclosure.pdf and declare no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous 3 years; and no other relationships or activities that could appear to have influenced the submitted work, with the exception of Health Literacy Solutions Pty Ltd, at which Kirsten McCaffrey and Danielle Muscat are directors. Kirsten McCaffery and Danielle Muscat are Editors of health and medical journals. This does not alter our adherence to PLOS ONE policies on sharing data and materials.