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(A) Pre-infliximab plasma OSM concentrations (pg/mL) was evaluated between biochemical responders (>50% reduction in baseline fecal calprotectin) and nonresponders with the Mann–Whitney test (data are log-transformed). (B) Receiver-operating characteristic analysis was then performed to identify the pre-infliximab OSM cut point (Youden index) that was associated with biochemical nonresponse.
