GSTM1 and diabetes mellitus: As shown in Supplementary Table S1, compared to those with available Hb/Cr data, excluded patients were slightly older (62.7 ± 12.3 vs. 61.6 ± 12.7 years), more often female (25.0% vs. 21.9%), and had a lower prevalence of hypertension (38.3% vs. 51.1%), diabetes (17.0% vs. 20.6%), and multivessel disease (55.7% vs. 42.4%), but a higher prevalence of dyslipidemia (55.3% vs. 45.7%) and peripheral artery disease (10.2% vs. 4.9%), as well as a lower LVEF (47.2% vs. 50.4%).