Evaluating effects of treatment in subgroups of patients within a clinical trial: the case of non-Q-wave myocardial infarction and beta blockers.
Yusuf
S
S
Clinical Trials Branch, National Heart, Lung, and Blood Institute, Bethesda, Maryland 20892.
Wittes
J
J
Probstfield
J
J
D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D015982:Bias; D004562:Electrocardiography; D006801:Humans; D009203:Myocardial Infarction / Q000188:drug therapy / Q000503:physiopathology*; D011433:Propranolol / Q000627:therapeutic use; D016032:Randomized Controlled Trials as Topic
D000319:Adrenergic beta-Antagonists; D011433:Propranolol