MMP9 and coronary artery disorder: Cl: Confidence interval, CHD: coronary heart disease, MDA: malondialdehyde, ox-LDL: oxidized low-density lipoprotein, hs-CRP: high-sensitivity C-reactive protein, MMP-9: matrix metalloproteinase-9, TC: total cholesterol, TAG: triacylglycerol, HDL: high-density lipoprotein, LDL: low-density lipoprotein; VLDL: very low-density lipoprotein.