Table 4.

Association of IRVF with acute kidney injury, renal replacement therapy, or death

Outcome	n/N	Crude* OR (95%CI) for IRVF pattern	p-value	Adjusted** OR (95%CI) for IRVF pattern	p-value
KDIGO stage 3 or death	15/38	7.57 (1.27–45.00)	0.026	9.67 (2.13–44.02)	0.003
RRT or death	10/38	14.15 (3.33–60.1)	< 0.001	29.30 (2.20–391.81)	0.011

CI, confidence interval, IRVF, Intrarenal venous flow, KDIGO, Kidney Disease Improving Global Outcomes, OR, odds ratio, RRT, Renal replacement therapy

*analyzed by Generalized Estimating Equation

**adjusted for baseline KDIGO stage and APACHE II score and analyzed by Generalized Estimating Equation as well. The reference level was continuous pattern of IRVF. Outcome was repeatedly assessed for 7 days after IRVF measurement.