A Look Through Time: Historical Analysis of Obstetrics and Gynecology Texts Highlights Changes in Medicine.

Objective: Our objective was to analyze systematically the preface and foreword of each edition of and to gain insight into historical changes in medicine.

Methods: The preface and foreword from 24 editions of and 11 editions of were obtained. Documents were assessed for the inclusion of predefined key words or topics, including sex-specific pronoun usage, insurance, fertility regulation, government regulation/laws, documentation burden, malpractice, race, medicine as "art" or medicine as "science," and others.