Table 6. Relationship between surfactant proteins and RAGE levels in the heart failure population.

		Immature SPB	Mature SPB	SPA	SPD
Immature SPB (AU)	r value
	p value
Mature SPB (ng/ml)	r value	0.097
	p value	NS
SPA (ng/ml)	r value	0.511	0.295
	p value	<0.01	<0.01
SPD (ng/ml)	r value	0.470	0.138	0.547
	p value	<0.01	NS	<0.01
RAGE (pg/ml)	r value	0.261	0.039	0.511	0.573
	p value	<0.05	NS	<0.01	<0.01

SPs and RAGE levels are transformed into natural logarithm. For abbreviation see table 1 and 2.