EBP Resource

Easy Critical Appraisal Tool

This is a critical appraisal tool (CAT) designed for use by beginners, who are not very familiar with various study designs or with statistics. This CAT focuses on the fundamentals and is less sophisticated than other CATs, but easier to use and a good primer for EBP beginners.

EBP Interest Group Workshop on Critical Appraisal

Here is a pdf copy of the slides and notes used for the second EBP Interest Group meeting conducted in March 2014 at the University of New South Wales focusing on Critical Appraisal. If you are interested in a copy of the PowerPoint slides or want to participate in the group, please contact us at eboptometry@unsw.edu.au.

The RoBIN-T scale for rating single case designs

Not all single-case designs have high methodological quality. The revised Risk of Bias in N of 1 Trials (RoBiN-T) scale can be used to:

  • Identify experimental versus non-experimental single-case designs
    • Experimental designs are those which use variants of the withdrawal/reversal design (e.g. ABA), multiple baseline designs, alternating treatment designs and changing criterion designs.
    • Non-experimental designs include those that use a single phase or are bi-phasic only (eg. A-B), contain pre/post data only and case descriptions.

Centre for Eye Health

The Centre for Eye Health (CFEH) based at the University of New South Wales provides state-of-the-art eye imaging and visual system diagnostic services to the general community in one location, at no charge.

For Opthalmologists and Optometrists, there are also online cases to assist with use of EBP from a problem-based learning perspective.

  • The IMAGE online newsletters are freely available and discuss a key eye condition in each issue from an Optometric perspective.

PEDro-P Scale for Critical Appraisal of Group Comparison Studies

The PEDro-P is a reliable tool to rate group comparison studies (both randomised and non-randomised control trials)

Cochrane Eyes and Vision Group

The Cochrane Eyes and Vision Group is (CEVG) is part of the Cochrane Collaboration. The CEVG is an international network of individuals dedicated to promoting EBP by working to prepare, maintain and promote access to systematic reviews of interventions to treat or prevent eye diseases or visual impairment.

This website has a range of resources that may be of interest:

Medical Statistics Tutorial

This Medical Statistics Tutorial is an innovative resource that helps health professionals understand statistics. There is content for people just starting out and those wanting to advance their skills. Understanding statistics is a key part of interpreting data, critically appraising articles and application of research to practice.

Topics include:

Centre for Evidence-based Medicine (CEBM)

The Centre for Evidence-based Medicine is comprehensive and has great theoretical information and practical tips on EBP.

There is a range of EBM Tools that cover each step of the EBP Process.

Of specific interest may be:

Information Skills Tutorial

The Medicine Information Skills Tutorial website has a free, step-by-step tutorial on a range of topics to improve your information skills.

Tutorial topics include:

BMJ How to Read a Paper series

The How to Read a Paper series by Trish Greenhalgh and colleagues, published in the British Medical Journal (BMJ) are easy to read guides for critical appraisal of the evidence. There are multiple articles covering general and specific research designs (e.g. systematic reviews) and great resources for understanding statistics.


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