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"the conscientious, explicit and judicious use of theory-derived, research based information in making decisions about care delivery." In other words it is the use of current best evidence in making decisions about patient care.

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Role of the Nurse in Evidence Based Practice

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Role of the Nurse in Evidence Based Practice

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- Be the inquiring mind 'worry and wonder'
- Ask good clinical questions
- Engage in research to improve practice
- Educate peers and junior colleagues about new evidence
- Collaborate with multidisciplinary colleagues on research and its application in practice
- Involve patients in their care
- Consider the context/environment in your practice

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Differentiate:
- Foreground questions
- Background Questions
Clinical questions may relate to:
- Diagnosis
- Treatment/ therapy
- Prognosis
- Cause/ aetiology
- Experience/ meaning

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Using a clinical scenario to locate research evidence - key questions:

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Using a clinical scenario to locate research evidence - key questions:

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Questions to guide review of your database search

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Questions to guide review of your database search

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Journal/Research  Articles: Have you ever felt this? why?

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Journal/Research  Articles: Have you ever felt this? why?

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List some strategies that you find useful to make sense of journal articles

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List some strategies that you find useful to make sense of journal articles

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Please make brief notes on the following key concepts for Week 5.

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Please make brief notes on the following key concepts for Week 5.

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In this session we covered:
- Probability sampling
- Non-probability sampling
- Data collection methods
*Data collection methods MUST be reliable and appropriate

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Examples:
- Randomisation from a computer
- Use of sampling frame e.g voters roll or hospital beds

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- To answer research questions
- To test hypothesis
- Evaluate outcomes

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Quantitative research data collection methods

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Quantitative research data collection methods

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Qualitative research data collection methods

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Qualitative research data collection methods

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- Confirm hypothesis
- Explain phenomena e.g peoples experiences
- Validate research instruments
- Report on effectiveness of clinical interventions

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Time to read: 2 minutes

Odds of an event happening is defined as the likelihood that an event will occur, expressed as a proportion of the likelihood that the event will not occur. Therefore, if A is the probability of subjects affected and B is the probability of subjects not affected, then odds = A /B.

Therefore, the odds of rolling four on dice are 1/5 or an implied probability of 20%. [Note this is not the same as probability which would be 1/6 = 16.66%]

Odds Ratio (OR) is a measure of association between exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure.
Important points about Odds ratio:

Calculated in case-control studies as the incidence of outcome is not known

OR >1 indicates increased occurrence of an event

OR <1 indicates decreased occurrence of an event (protective exposure)

Look at CI and P-value for statistical significance of value (Learn more about p values and confidence intervals here)

In rare outcomes OR = RR (RR = Relative Risk). This applies when the incidence of the disease is < 10%

If you are interested in doing a full research and statistics course for critical analysis/ appraisal then click here.

Also, don't forget to download our free critical appraisal worksheets to analyse research papers.

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What is an Odds Ratio and How do I Interpret It? - Critical Appraisal

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OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure.