The results or impact of any type of intervention on health, (e.g. a clinical procedure, health policy or program, etc.).

The systematic evaluation of properties, effects, and/or impacts of health care technology. It may address the direct, intended consequences of technologies as well as their indirect, unintended consequences. Its main purpose is to inform technology-related policymaking in healthcare. HTA is conducted by interdisciplinary groups using explicit analytical frameworks drawing from a variety of methods.

Patient outcome measures that include physical, social, and emotional aspects that are relevant and important to an individual’s wellbeing.

In meta-analysis heterogeneity refers to variability or differences between studies e.g. due to different study designs, different statistical methods, differences in key characteristics of the participants, interventions or outcome measures