Geographic Differences in Pediatric Surgical Mortality in Canada: A Retrospective Cohort Study.

Objective: This study describes differences in postoperative mortality for pediatric patients in rural communities compared to urban communities.

Background: Canada has the second largest land mass in the world, with a population density of 4 people per km. There are 18 children's hospitals in Canada offering pediatric surgical services, all in urban centres, yet nearly one-fifth of the population lives in rural or remote communities. Children who live in rural settings may have worse surgical outcomes, including mortality rates, compared with urban populations.

Methods: Pediatric patients, from birth to 18 years old, who had surgery from January 1, 2011, to December 31, 2021, at a single Children's Hospital were included in the study. Data was obtained from the provincial Operating Room Information System (ORIS) database. Postal code, rural and urban status, distance to children's hospital (0-50 km, 51-100 km, 101-150 km, 151-200 km, and >200 km), and procedure urgency were collected. 30-day mortality for all procedures was collected.

Results: 85,998 surgical procedures were performed at ACH between 2011 and 2021. 17,773 (20.7%) of patients lived >50 km or more from the hospital - 5,329 (6.2%) 51- 100 km, 4,053 (4.7%) 101-150 km, n=2,323 (2.7%) 151-200 km, and 6,070 (7.1%) >200 km. Rural patients had higher 30-day mortality rates than urban patients, with an odds ratio of mortality (rural vs urban) of 2.30 (95% CI, 0.95 to 5.60). When stratified by distance, patients living closer to the hospital (0-50 km) had lower odds of mortality.

Conclusions: Canadian Rural patients have higher operative mortality risks than urban patients. This study identifies a vulnerable group of patients who do not have equal access to care and may experience worse outcomes.