evidence based medicine ( dr.moaweyah)
Post on 15-Jul-2015
92 Views
Preview:
TRANSCRIPT
Evidence Based Medicine
AND
Statistical Significance
PREPARED BY :
DR.MOAWEYAH QASIM
SUPERVISED BY:
DR.HOSNI AL RAIES
PEDIATRIC ALLERGIST CONSULTANT
What is the Evidence based medicine?
• Evidence based medicine has been defined by David Sackett as:
• The conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients, to aid the delivery of optimum clinical care to patients.
5 Steps in Practicing EBM ‘5A’
1. Ask: Asking answerable question
2. Acquire: searching for the best evidence
3. Appraise: Critically appraising the evidence
4. Apply: Applying the evidence to individual patient care
5. Asses: Evaluating the process
SYSTEMIC REVIEW
• Usually focus on a clinical topic and answer a specific question
• The studies are reviewed, assessed, and result summarized according to criteria of the review question
Meta-Analysis study
• When quantitative strategy for combining the result of included studies into a single pooled or summary estimated, it is called a Meta-Analysis.
• Summarized a number of studies to report the results.
• The Cochrane Collaboration has done a lot of work of systematic reviews and meta-analysis
Randomized controlled trials
• Comparison between intervention group (received treatment, procedure) with control group (no intervention).
• Follow the results and outcome
Cohort study
• Cohort study are observational and not randomized controlled studies
• Take a large number of population
• Already have same factors (treatment, exposure, risk factors)
• Follow them for time to see the outcome
• Then compare with similar group has not been affected by these factors
Case control studies
• Patients already have specific condition• Compared with people do not have this condition
• To look back to identify the factors or exposures might be associated with this illness
• It is less reliable than randomized controlled and cohort studies because statistical relationship does not mean that the factors is are causing the illness.
Case series and reports
• Collections of reports for single case (case report) or several cases (case series).
• Including findings and treatment and outcome
top related