Systolic hypertension in the elderly program (SHEP). The first three months.
D000368:Aged; D001794:Blood Pressure / Q000187:drug effects; D001795:Blood Pressure Determination; D002752:Chlorthalidone / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D010349:Patient Compliance; D011188:Potassium / Q000097:blood; D011897:Random Allocation
D002752:Chlorthalidone; D011188:Potassium