Fig. 3

The cumulative impact of risk factors found in multivariate regression model on 30-day mortality of RRT patients ≥75 years old and without treatment limitations (n = 411). Risk factors were identified as positive RRT criteria measured by RRT, Charlson comorbidity score ≥ 5, non-elective hospital admission, medical reason for admission, and afferent limb failure. RRT, rapid response team