Table 1.

Types and objectives of PHC models in the study

Model	Objectives
Traditional GP practice	Traditional GP practices are typically privately owned by one or more GPs and generally include practice nurses. They may also include allied health and other visiting specialist staff. There are no explicit published objectives available for this model.
GP Super Clinic (GPSC)	GPSCs were introduced by the federal government in 2010 [25]. The broad objective of these services was to provide accessible integrated multidisciplinary care through physical or virtual co-location.
HealthOne	HealthOne services were established by the New South Wales state government in 2006/07 [26] with the aim of providing integrated, client focused, multidisciplinary team care, with stronger links between general practice and state funded community health services.
Community Health Service	The Community Health Service (CHS) program was introduced by the federal government in the early 1970s. Of relevance to the Victorian CHS in this study, the Victorian state government reorganised CHSs in the late 1980s with the broad aim of providing universal access to services, largely through non-government organisations with community based boards; particularly for vulnerable populations.

HealthOne and Community Health Services are state models in which public funding allows no or minimal patient co-payments for GP, nurse or allied health services