Demographic Factors and Biliary Atresia: A Childhood Liver Disease Research Network Study

To test the hypothesis that community deprivation, race, and ethnicity lead to decreased likelihood of undergoing hepatoportoenterostomy, older age at surgery, decreased likelihood of achieving successful bile drainage, and lower rates of native liver survival for infants with biliary atresia.

We analyzed a prospectively enrolled cohort of infants with biliary atresia from the Childhood Liver Disease Research Network (ChiLDReN) that reflects the demographics of the US population. We tested the association between demographic, clinical, and anatomic variables and the probability of undergoing hepatoportoenterostomy, age at surgery, success of surgical intervention, and native liver survival using linear and logistic regression.

Seven hundred nineteen infants with biliary atresia from 15 centers met study inclusion criteria and 672 (93.5%) underwent hepatoportoenterostomy. After adjusting for potential confounders, Asian race (odds ratio [OR] = 0.21, 0.06-0.77), Hispanic ethnicity (OR = 0.33, 0.14-0.76), and community deprivation (0.71 per 0.1 increase, 0.52-0.97) were independently associated with decreased probability of undergoing hepatoportoenterostomy. Each 10% increase in community deprivation increased the age at hepatoportoenterostomy by approximately two-and-one-third days (estimate 2.31; P = .48). Black/African American infants were approximately 9 days older than white infants at the time of operation (estimate 9.19; P = .01), while age at hepatoportoenterostomy (OR = 0.90, P = .01) and successful bile drainage at 3 months (OR = 26.15, P < .01) were independently associated with native liver survival.

Community deprivation, race, and ethnicity are associated with both lower hepatoportoenterostomy rates and older age at the time of operation, whereas clinical and anatomic variables are associated with successful biliary drainage and native liver survival.