Control group
The group a new treatment is measured against.
What it means
The control group provides the comparison. Depending on the study, it may receive a placebo, an existing standard treatment, or no study treatment at all.
Why it matters if you take part
Without a comparison group there is no way to tell whether change came from the treatment or would have happened anyway.
Related terms
Trials recruiting now that compare against an existing treatment
949 recruiting trials in our Canadian corpus compare against an existing treatment.
A Study to Compare Two Surgical Procedures in Individuals With BRCA1 Mutations to Assess Reduced Risk of Ovarian Cancer
Ovarian Carcinoma · NA
A Study of Nemtabrutinib Plus Venetoclax vs Venetoclax + Rituximab (VR) in Second-line (2L) + Relapsed/Refractory (R/R) Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL) (MK-1026-010/BELLWAVE-010).
Leukemia, Lymphocytic, Chronic, B-Cell · PHASE3
A Study to Learn About the Study Medicine Called Tilrekimig in People With Moderate-to Severe Eczema
Atopic Dermatitis · PHASE3
A Trial to Learn How Well Linvoseltamab Works Compared to the Combination of Elotuzumab, Pomalidomide and Dexamethasone for Adult Participants With Relapsed/Refractory Multiple Myeloma
Relapsed Refractory Multiple Myeloma (RRMM) · PHASE3
A Study With Combinations of Anti-LAG-3 and Anti-PD-1 Antibodies in Adult Participants With Advanced or Metastatic Melanoma (Harmony Head-to-Head)
Melanoma · PHASE3
A Study to Test Inavolisib Treatment in Participants With Metastatic Castration-Resistant Prostate Cancer
Metastatic Castration-Resistant Prostate Cancer · PHASE2
This explains how clinical research works. It is not medical advice and does not describe any specific condition or treatment. Only a trial site can determine whether someone can take part in a study.