Table 3

Univariate (rank correlations, r) and multivariate relations (multiple regression forward selection, R²) between SF-36 domains and other variables (n=205)

	Physical function (r)	Role– physical (r)	Bodily pain (r)	General health p (r)	Vitality (r)	Social function (r)	Role– emotional (r)	Mental health (r)
Data are presented as Spearman rank correlation coefficients. Significance of correlations after Bonferroni adjustment of p values (α/48): p<0.01; * p<0.001; R = variance of dependent variable explained by multiple regression analysis.
CHF, congestive heart failure; general health p, general health perception; LVEF, left ventricular ejection fraction; NYHA, New York Heart Association; peak Vo₂, peak oxygen uptake.
NYHA¹	−0.63**	−0.42**	−0.31**	−0.51**	−0.53**	−0.35**	−0.32**	−0.42**
Peak Vo₂³	0.47**	0.23**	0.16	0.40**	0.30**	0.25	0.20	0.26*
6 minute walk test²	0.56**	0.28**	0.26**	0.34**	0.41**	0.29**	0.24**	0.29**
LVEF⁴	0.11	0.05	−0.05	0.16	0.01	0.05	0.11	0.03
Age⁵	−0.13	−0.09	−0.11	−0.16	−0.06	−0.02	−0.22**	−0.05
Duration of CHF⁶	−0.25	−0.13	−0.07	−0.27	−0.04	−0.16	0.05	−0.02

	R ²	R ²	R ²	R ²	R ²	R ²	R ²	R ²
Step1^(predictor)	0.40⁽¹⁾	0.16⁽¹⁾	0.10⁽¹⁾	0.28⁽¹⁾	0.27⁽¹⁾	0.10⁽¹⁾	0.10⁽¹⁾	0.15⁽¹⁾
Step2^(predictor)	0.11⁽²⁾
Total ^(predictor)	0.51⁽^1,²⁾	0.16⁽¹⁾	0.10⁽¹⁾	0.28⁽¹⁾	0.27⁽¹⁾	0.10⁽¹⁾	0.10⁽¹⁾	0.15⁽¹⁾