Incidence of acute GVHD.

Cumulative incidence of acute GVHD grade I to IV (▨) and III to IV (▨▨▨▨) among patients given and not given UDCA. There was a nonsignificant trend toward lower overall incidence of acute GVHD in the group given UDCA, and a statistically significantly lower incidence of grade III to IV acute GVHD in the UDCA-treated group.