Fig. 1From: Double product reflects the association of heart rate with MACEs in acute coronary syndrome patients treated with percutaneous coronary interventionKaplan-Meier curve showing the risk of MACEs, stratified by double product (p = 0.0117, cut-off9657mmHg*bpm). The number of patients at risk at the beginning of each half year is shown below the horizontal axisBack to article page