To evaluate whether patient age or other sociodemographic and clinical characteristics are associated with recurrence or unplanned related hospital revisits after pediatric umbilical hernia repair.

We performed a retrospective cohort study using the Healthcare Cost and Utilization Project State Inpatient, Emergency Department, and Ambulatory Surgery and Services Databases of 7 states. Pediatric umbilical hernia repairs performed at any hospital or surgery center in 2010-2014 were included. Hernia recurrences and occurrences of unplanned and related hospital revisits within 30 days were evaluated.

Of 9809 included patients, 52.0% were female and 50.5% were black. The 3-year hernia recurrence rate was 0.57% (95% CI 0.42, 0.73). In multivariable analysis, the recurrence rate was higher in children <4 years of age than in children 4-10 years of age (hazard ratio [HR] 1.93, 95% CI 1.09, 3.44). Unplanned related hospital revisits within 30 days occurred in 2.5% of patients. Patient characteristics associated with the risk of an unplanned related hospital revisit included age <4 years (HR 2.17, 95% CI 1.70, 2.77) or >10 years (HR 2.11, 95% CI 1.46, 3.05), public insurance (HR 2.10, 95% CI 1.58, 2.79), asthma (HR 1.74, 95% CI 1.32, 2.29), and initial presentation to the emergency department (HR 2.46, 95% CI 1.08, 5.61).

Rates of recurrence and unplanned related hospital revisits following pediatric umbilical hernia repair are higher in children younger than 4 years of age. These findings support delaying the repair of asymptomatic umbilical hernia in children until 4 years of age.