אנגלית ⇄ אנגלית ספרדית צרפתית רוסית +

placebo-controlled trial
.האומו	ensayo con testigos tratados con placebo
אנגלית אוצר מילים
placebo-controlled trial
.רְפוּ	A type of clinical trial. In placebo-controlled trials, one group of participants the control arm receives an inactive drug or other intervention, called a placebo, while another group of participants the experimental arm receives the active drug being tested. The two groups are compared to see if the drug is more effective than the placebo. ראה גם placebo