Purpose: To determine the number of DO (doctor of osteopathic medicine) and MD (doctor of medicine) residents in training programs accredited by the Accreditation Council for Graduate Medical Education (ACGME) and the American Osteopathic Association (AOA) and to examine the behavior of DO residents who moved between the two types of programs.
Method: In 2013, the authors linked data on residents reported in ACGME-accredited and AOA-accredited programs in 2009, 2010, and 2011 to produce a count of all residents, including an unduplicated count of residents reported in joint programs. DO residents were identified who moved between AOA-accredited and ACGME-accredited programs.