Univariate Cox regression analysis showed that factors associated with all-cause death after PCI in the elderly patients included ACS, prior history of MI, eGFR, levels of total cholesterol and glucose, LVEF, and the use of statins, calcium-channel blockers, diuretics, and aldosterone antagonists (Table 3), whereas those in non-elderly patients included age, prior history of CABG surgery, dyslipidemia, cigarette smoking, eGFR, glucose level, LVEF, multivessel coronary disease, and the use of statins, β-blockers, and insulin (Table 5). Here, INS is linked to metabolic syndrome.