Determinants of testing practices and HBsAg-positive status.

For each endpoint, all variables in the risk-factor column were used in the multivariable logistic regression model except for those with “—”. Further details on model construction are provided in Table S1.*Thirteen patients were excluded from analysis as they had missing data on parent's geographical origin.**Fifteen patients were excluded from analysis as 13 had missing data on parent's geographical origin, one had missing age, and one had missing physician's recommendation for testing.1Endpoint defined as if the study physician would have tested the participant for HBV per study center's protocol.2Includes participants with government assistance (CMU, AME) and “other” health insurance plans.