One of the Joint Commission on Accreditation of Healthcare Organizations' (JCAHO) 2007 National Patient Safety Goals focuses on the measurement of safety culture. This study evaluated the psychometric properties of a teamwork climate scale (the Safety Attitudes Questionnaire) in the operating room of 60 U.S. hospitals. Their findings support the use of this tool as a method to understand, improve, and evaluate operating room teamwork and design tailored interventions. The authors also provide benchmark data for others who are interested in assessing teamwork climate in their own institutions.