Fig. 1

Spearman correlations between the overall 15D score and dimension values and the Seattle Angina Questionnaire short-form (SAQ-7), SAQ Physical Limitation (SAQ-PL), SAQ Angina Frequency (SAQ-AF), SAQ Quality of Life (SAQ-QL), Rose Dyspnea Scale (RDS) and two-item Patient Health Questionnaire (PHQ-2) at baseline