Low Incidence of Postoperative Respiratory Depression with Oliceridine Compared to Morphine: A Retrospective Chart Analysis

Figure 1

Study design for ATHENA and retrospective observational chart review study. Eleven study sites from the ATHENA trial participated in the retrospective observational chart review study. Subjects in the CO cohort were identified by rigorous chart review during the same interval of time that recruitment for the ATHENA trial had occurred. The CO cohort was limited to individuals treated with IV morphine either alone or in combination with other conventional opioids.