Editor of Clinical Guidelines, Directorate of Health

Editor of Clinical Guidelines, Directorate of Health, Iceland

Efficacy:

Describes how well or badly some input (intervention/ health technology like drugs, screening program etc) works under ideal circumstances whether artificial (research setting) or natural (created by for example geography, captive population).

Effectiveness:

Describes how well or badly some input (specific interventions / health technology like drugs, screening program or other services etc) works under usual circumstances (real world or usual practice).

Editor of Clinical Guidelines, Directorate of Health, Iceland

Commissoning

This has many meanings depending on the situation / reference. Relating to HTA it adaptation is the deligation of some task/assignment to an individual or group. This usually involves transferring some authority and responsibility to those being asked/ordered (commissioned) to performe some task.

Planning

Describes the a priori formulation of a scheme or strategy to attain some specific accomplishment.

Purchasing