A global census of physician assistants and physician associates.

The physician assistant or physician associate (PA) profession is being adopted in many countries. At a time of improved communication and international exchange of educational methods, no central repository of PA numbers exists. The authors set out to consolidate basic information on PAs. The purpose of the project was to support efforts underway that include the global development of PAs. The prevalence of PAs in each country was obtained using an informant methodology strategy and supplemented with reports and internet validation. Eighteen countries have a PA (similar healthcare professionals with different titles were not included), for an estimated total of more than 132,000 clinically active PAs and 366 training programs. In most countries, PA expansion was reported as being underway.