Clinical characteristics of study participants according to blood pressure and tHcy level.

Continuous variables are expressed as mean (±SD) or median (interquartile range), and categorical variables are expressed as counts and percentages. Low tHcy was defined as tHcy concentration HDL: high-density lipoprotein; LDL: low-density lipoprotein; FBG: fasting blood glucose; 2-h PBG: 2-h postprandial blood glucose; eGFR: estimated glomerular filtration rate; CVD: cardiovascular disease; CCB: calcium channel blocker; ACEI: angiotensin-converting enzyme inhibitor; ARB: angiotensin II receptor blocker.