22 © 2008 Universitair Ziekenhuis Gent TIMING START RRT TYPE OF STUDYNPARAMETEREFFECT ES Gettings et al, 1999Retrospective243BUN 76+ Guerin et al, 2000Prospective Observational post hoc 510Time after admission0 Bouman et al, 2002RCT*, 4 arms106Fixed time point (12 hrs) vs.
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