The project used a formal methodology and supporting software. 2 A review of current public health definitions, concepts and relevant classifications was used to develop the scope, domain, and initial multi-dimensional structure. These were considered in a series of consultations with public health experts across Australia (see list of those consulted in Appendix B). Consultations involved both one-on-one meetings and larger group sessions. Experts identified important omissions, fine-tuned concepts, and nominated practical uses for the public health classification.