Fig. 2

Standardized coefficients of the structural equation model. **P < 0.05; HADS-D the hospital anxiety and depression scale-depression dimension, HADS-A the hospital anxiety and depression scale-anxiety dimension, NYHA the New York heart association class, BNP brain natriuretic peptide, NT-pro-BNP the aminoterminal part of BNP’s pro-hormone, SF-12 the short-form health survey 12, PCS-12 the physical component summary of SF-12, MCS-12 the mental component summary of SF-12.