noun
controlled clinical trial
Medical term for a clinical study with a control group, used in research contexts.
新薬の効果を調べるために対照臨床試験が行われた。
A controlled clinical trial was conducted to investigate the efficacy of the new drug.
Compound of 対照 (たいしょう, 'control, comparison') + 臨床 (りんしょう, 'clinical') + 試験 (しけん, 'trial').