From: Systematic searching for environmental evidence using multiple tools and sources
Question element | Definition |
---|---|
Population (of subjects) | Statistical samples or populations of subject(s) (e.g. ecosystem, species, etc.), to which the intervention will be applied, or exposed to described conditions |
Intervention/exposure | Policy, action or environmental variable impacting the populations or to which the subject populations are exposed |
Comparator | What the exposure or intervention are compared to. Either a control with no intervention/exposure or an alternative intervention or a counterfactual scenario |
Outcome | Consequences of the intervention or exposure. All relevant variables that can be reliably measured |