Evidence-based practice involves using the best available research evidence along with clinical expertise and patient preferences to make decisions about patient care. Systematic reviews summarize healthcare research to aid this process. An example is a provider recommending acetaminophen over other pain relievers to a patient with a history of stomach bleeding due to research showing it poses less risk of stomach bleeds. The process of evidence-based practice involves assessing the patient, asking a question, acquiring evidence, appraising the evidence, applying it while considering expertise, preferences and re-evaluating performance.