Establishment of the cut-offs
SENSITIVITY
We hypothesized that penKid would identify patients with recovering kidney function while receiving CRRT, therefore, all cutoffs were based on the landmark time point. Sensitivity analysis of penKid demonstrated best performance and robustness for cutoffs between 90 and 105 pmol/l (Additional file The association between urinary output and successful liberation was constantly high, but strongly dependent on the cutoff (Additional file 