Evolving residency requirements for ambulatory care training for five medical specialties, 1961 to 1989.

Recent changes in the patient population of teaching hospitals, spurred by technologic advances and economic forces, have jeopardized the traditional hospital-based model of residency training. In consequence, there has been increasing attention paid to the need for ambulatory care experience. A primary force in shaping the content of postgraduate medical education is "The Essentials of Accredited Residencies," published in the Directory of Graduate Medical Education Programs. We reviewed recommendations and requirements for ambulatory settings and outpatient experience as specified in the Directory during the years 1961 to 1988 and investigated pending changes in requirements for five major specialties: internal medicine, pediatrics, family practice, general surgery, and obstetrics and gynecology. Increases in the amount of time residents spend in ambulatory care training recently have been mandated in internal medicine and are under consideration in two other specialties, indicating probable major shifts in the locus of postgraduate medical training.