Geographical discrepancy in oral food challenge utilization based on Canadian billing data

BackgroundOral food challenges (OFC) confer the highest sensitivity and specificity in diagnosis; however, uptake has been variable across clinical settings. Numerous barriers were identified in literature from inadequate training to resource access. OFC utilization patterns using billing data have not been previously studied.ObjectiveThe objective of this study is to explore the geographic differences in utilization of OFCs across Ontario and …