Focus Characteristic Code

Used to reference a specific article.

Used to denote a focus on clinical outcomes, ie evidence variable in role of outcome (measured variable) as observed is considered a "clinical outcome" (patient-important outcome such as mortality, symptoms, function or quality of life).

The population of interest.

The exposure of interest, such as an intervention.

The comparator (intervention or control state) of interest.

the outcome of interest.

Any medication exposures. A subset of exposures or interventions that are medications.

Type of research study, such as randomized trial or case-control study.