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Evidence Based Medicine

A guide to help you find Evidence Based Medicine resources.

Choose the type of question you are trying to answer

Once you have formulated your question, you need to figure out what type of question you are trying to answer.

Is it:

Therapy:  Effect of an intervention (on a patient, department, staff, etc...)

Harm:  Effects of potentially harmful agents (including therapies) on patient outcomes

Diagnosis:  Differentiates between those with and without a condition or disease

Prognosis:  Estimating patients likely course over time

Clinical Examination: Gather interpret findings from history and exam

Cost Analysis:  Compare costs of treatments and tests


All 3 of the examples below are Therapy questions.

Example: In a child under 2 years of age with otitis media, is watchful waiting versus amoxicillin x 10 days as effective in reducing symptoms.

Example: In a patient with Bell's Palsy, is valacyclovir versus prednisolone more effective in improving facial paralysis?

Example: For all persons entering the critical care unit, is the addition of hand rubbing with a waterless, alcohol based solution more effective than just hand washing with soap and water in reducing nosocomial infections?

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