We prospectively examined randomization to first-step chlorthalidone , a thiazide-type diuretic ; amlodipine , a calcium-channel blocker ; and lisinopril , an angiotensin-converting enzyme inhibitor , on BP control and cardiovascular outcomes in a hypertensive cohort stratified by baseline BMI -LSB- kg/m ( @ ) ; normal weight ( BMI < @ ) , overweight ( BMI = @-@ @ ) , and obese ( BMI > @ ) -RSB- .