Rates of relapse and risk of early and late relapse according to GVHD status. Relapse rates were calculated within sequential 90-day intervals for patients without GVHD (shown in blue), for patients with grades II-IV acute GVHD (shown in green) or for patients with chronic GVHD (shown in red). Small symbols represent the actual relapse rates for each 90-day interval. The smoothed rates were plotted as curves for each condition.