Table 3.

Reference model derived by using a forward stepwise Cox analysis where renal venous patterns categories have been included.

	Reference Model		Reference Model Plus Renal Venous Patterns
	HR (95% CI)	p	HR (95% CI)	p
NYHA class III	3.01 (1.97–4.59)	<0.001	2.72 (1.76–4.20)	<0.001
Heart rate > 70	1.69 (1.17–2.44)	0.005	1.55 (1.07–2.27)	0.005
Mitral regurgitation	1.29 (1.07–1.56)	0.008	1.25 (1.04–1.52)	0.008
TAPSE < 15	1.59 (1.09–2.32)	0.017	1.53 (1.05–2.25)	0.017
NT-proBNP (×100)	1.020 (1.015–1.026)	<0.001	1.02 (1.012–1.023)	<0.001
RRI > 75	1.92 (1.31–2.81)	0.001	1.69 (1.14–2.50)	0.001
CRVP (type A or B)			1.00	-
MIRVP (type C)			1.79 (1.09–2.97)	0.023
IRVP (type D or E)			1.90 (1.16–3.12)	0.011

CRVP: continuous renal venous flow pattern. IRVP: intermittent/reversal renal venous flow pattern. MIRVP: mild intermittent/reversal renal venous flow pattern. For the other abbreviations see Table 1.