Clinical Nutritionist CCN Exam Prep

Answer: C - The statement which is not true of randomized, double-blind clinical research trials is that placebo treatments are never used. Placebo treatments are used frequently in clinical trials to measure the effects of real treatment versus effects of inactive substances on a disease or health condition. In a double-blind research trial, neither investigators nor study participants know which subjects are receiving treatment. In addition, study subjects are carefully matched by age, sex, health status, etc., to similar control subjects, and both study subjects and controls are randomly assigned to avoid study bias.