Table 5:

Frailty Cox proportional hazard model CRRT circuit survival.

Model	Hazard ratio (CI)	P value
Model 1: Crude CVVHDF/RCA3.0 vs CVVH/RCA2.2	0.31 (0.18–0.52)	<.001
Model 2: adjusted for sex and age	0.31 (0.18–0.52)	<.001
Model 3: adjusted for sex, body weight, and age	0.32 (0.19–0.54)	<.001
Model 4: adjusted for sex, body weight, age, and COVID-19	0.32 (0.19–0.54)	<.001
Model 5: adjusted for sex, body weight, age, COVID-19, and APACHE IV score.	0.33 (0.20–0.55)	<.001

Frailty Cox proportional hazard models based on all CRRT circuits of the CVVH/RCA2.2 protocol group (n = 179) and the CVVHDF/RCA3.0 protocol group (n = 168), after exclusion of CRRT circuits ended because of procedures outside the ICU, machine errors, or the decision to cease CRRT. Body weight was entered per 10 kg increase.