Relative to the low-risk group, the medium- and high-risk groups were noticeably different in age, sex, weight, diastolic blood pressure, time of onset, myocardial infarction site, Hb, ERY, HCT, MCHC, SD, ALB, A/G, TC, TG, LDL, blood urea nitrogen, PT, and PtA (all P < 0.05) (Table 1). This evidence concerns the gene GSTM1 and myocardial infarction.