Treatment effect heterogeneity

Treatment effect heterogeneity refers to the idea that different individuals may respond differently to the same intervention or treatment. For example, a medication might work well for some people but not for others due to factors like genetics, lifestyle, or health conditions. Recognizing this variability helps researchers and healthcare providers tailor approaches more effectively, ensuring each person receives the most suitable intervention. In essence, it highlights that a "one-size-fits-all" approach may not be optimal, and understanding individual differences can improve outcomes.