A: binary logistic regression for Death within 7 days (ED_d7). B: binary logistic regression for Death within 7 days (ED_d7).

9A: Therapeutic leukapheresis did not impact on the early death rate when the early death score was introduced as a continuous variable into the binary logistic regression. 9B: Therapeutic leukapheresis might lower the risk of early death in patients belonging to the LowR d7 group. Abbreviations: CL, confidence limit; n, number; OR, Odds Ratio.