GSTM1 and hypertensive disorder: Among the four RC quartiles, differences with statistical significance were observed in age, gender, race, education level, marital status, FIPR, BMI, WC, smoking, diabetes, hypertension, hyperlipidemia, CVD, CKD, WBC, Neu, Lym, PLT, Hb, ALT, ALP, GGT, Scr, UA, TC, TG, LDL-C, HDL-C, FPG, HbA1c, iron, sodium, and calcium (all P<0.05).