Fig. 3

Hazard ratios for mortality by RRF across age groups. Panel a and b, unadjusted and adjusted hazard ratios for all-cause mortality, respectively; Panel c and d, unadjusted and adjusted hazard ratios for cardiac mortality, respectively. RRF means eGFR < 60 ml/min per 1.73 m². Adjusted models include covariates as follows: RRF, age, gender, pre-hypertension, pre-diabetes mellitus, systolic blood pressure, Killip class, severity of CAD, diagnosis of ACS, and treatment of PCI. Abbreviations: eGFR, estimated glomerular filtration rate; CAD, coronary artery disease; ACS, acute coronary syndrome; PCI, percutaneous coronary intervention