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—I appreciate your comments and welcome them. You were correct in saying my approach was entirely subjective. I, too, made that fully clear; for that reason I invite scrutiny and such comments.
I am also in full accord with your specific comments regarding the upward percentages for surgery and anesthesia in the ambulatory locale. I (a nonsurgeon and nonanesthesiologist) see that these trends are understandably connected and are attributable, as you point out, to the adaptation widely of "lesser" degree surgery to the ambulatory site, more and more so in recent years. I knew that in these years at Beth Israel Medical Center, New York, we have been so redesigning our efforts, and, perhaps, I should have shifted my graph weights accordingly and not adhered to my olderderived percentages. I thank you for that observation and updating.
I cannot be certain of a precise new percentage approximation for ophthalmology
Leibowitz S. Division of Physician-Provider Time Between Ambulatory and In-Bed Patients in the Various Medical Specialties-Reply. Arch Intern Med. 1986;146(9):1859. doi:10.1001/archinte.1986.00360210257048