ALB and diabetes mellitus: Compared with the non-MACCEs group, patients in the MACCEs group showed statistically significant differences in the prevalence of diabetes, hypertension, and current smoking, as well as in lymphocyte count, serum albumin, low-density lipoprotein cholesterol (LDL-C), GNRI score, PNI score, the number of CTO-involved vessels, number of stents implanted, and total stent length (all p < 0.05).