Greater sex diversity in hospital anaesthesia-surgery teams is associated with better post-operative outcomes for patients, according to a study fromICES,Sunnybrook Research Instituteand the University of Toronto.

The study, published in theBritish Journal of Surgery, found that teams with more than 35 per cent female anesthesiologists and surgeons were associated with a three per cent reduction in odds of post-operative complications in the three months following surgery.

This is one of the first studies to focus on sex diversity of operating room teams, building on past work that has compared the impact of individual surgeon and anesthesiologist characteristics on patient outcomes.

We wanted to challenge the binary approach of comparing female and male clinicians and rather highlight the importance of diversity as a team asset or bonus in enhancing quality care, sayslead authorJulie Hallet, a scientist with ICES and Sunnybrook Research Institute, and associate professor ofsurgeryat U of Ts Temerty Faculty of Medicine.

The study includes population-based, health-care data on 709,899 adult patients undergoing major in-patient surgeries in Ontario between 2009 and 2019.

Sex diversity of surgical teams was defined as the percentage of female anesthesiologists and surgeons among all anesthesiologists and surgeons working in the hospital each year. The primary outcome was 90-day major morbidity, which the researchers analyzed with a standardized classification scale to identify severe post-surgical complications.

The findings showed that reaching a critical mass of more than 35 per cent female anesthesiologists and surgeons was linked to lower odds of severe complications.

The association between greater sex diversity and reduced post-surgical complications was even greater for patients treated by female anesthesiologists and female surgeons which aligns with previous studies comparing outcomes of male to female surgeons.

These results are the start of an important shift in understanding the way in which diversity contributes to better quality care around the time of surgery, says Hallet. Ensuring a critical mass of female anesthesiologists and surgeons in operative teams is crucial to performance. Below a critical mass, female clinicians may withhold their perspectives, such that the benefits of diversity can only be achieved once minimum representation is reached.

One limitation of the study is that the data did not include gender as a social construct. It is possible that gender roles, behaviours and attitudes would have influenced the strength of the association.

The studys authors noted further research is also needed to explore diversity based on other sociodemographic variables, including but not limited to race and ethnicity.

Nevertheless, this study is the first to show a robust positive association between team sex diversity, patient outcomes and quality care.

We hope that these results will encourage hospitals to intentionally foster sex diversity in operating room teams to reduce poor health outcomes, which, in turn, can improve patient satisfaction and promote sustainability of health systems,saysGianni Lorello, staff anesthesiologist atToronto Western Hospital, University Health Network and an associate professor in Temerty Medicinesdepartment of anesthesiology and pain medicine.

Ensuring sex diversity in operative teams will require intentional effort for recruitment and retainment policies for female physicians, structural interventions such as minimum representation on teams, and monitoring and reporting of teams composition to build institutional accountability in existing systems. The research was supported by the Sunnybrook Alternate Funding Plan Innovation Fund.

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Hospitals with higher ratio of female surgeons, anaesthetists have better patient outcomes: Study - University of Toronto