Effectiveness

Effectiveness tests whether something works (does what it is supposed to do) or meets its objectives.

In health care, it focuses on what works and what works best. It often involves some type of measurement. It can include an evaluation, or in some cases research.

Evaluation versus research 

Evaluation determines whether objectives have been met and meeting standards. 

Research provides new knowledge.   

In the NHS it is important to be clear about this distinction. Research projects require NHS ethical approval whereas service evaluations do not. 

Systematic reviews 

Within health care, systematic reviews summarise the effectiveness of interventions. In knowledge and library services the use of systematic reviews is increasing.

Systematic review evidence, including:

• Evaluating clinical librarian services: a systematic review by Alison Brettle et al.
• Evaluating information skills training in health libraries: a systematic review by Alison Brettle et al.

may be useful when planning evaluations or work around effectiveness.