ALB and hematoma: In univariable analysis, exclusively the proportion of patients who developed either a deep hematoma or any type of hematoma was significantly higher in the drain group, (p = 0.02 and 0.01, respectively), although this association was not confirmed in multivariable analysis, as the propensity to receive a JP drain (i.e., patients with a lower pre-operative serum albumin and/or higher CIT) was more strongly associated with hematoma development than the actual use of a JP drain (Table 4).