Help with level of evidence

Nursing Students Student Assist

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Hi, please can someone tell me how I work out the level of evidence of an article using the NHMRC level of evidence.

So what level of evidence would these three articles be

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2881986/

http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD004257.pub2/abstract

http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD005328.pub2/full

Specializes in Critical Care, ED, Cath lab, CTPAC,Trauma.

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Thanks, but I'm new to this and really don't understand how I work it out. Do you know of any sites that can help me with working this out.

Specializes in Critical Care, ED, Cath lab, CTPAC,Trauma.

Right.....well....what does your school tell you about ranking medical information? I am from the US and I found these resources on Google.

http://www.nhmrc.gov.au/_files_nhmrc/publications/attachments/cp69.pdf

http://www.nhmrc.gov.au/guidelines/resources-guideline-developers

http://www.nhmrc.gov.au/_files_nhmrc/publications/attachments/cp65.pdf

http://evidencebasedmedicine.com.au/?page_id=30

Level I

Evidence obtained from a systematic review of all relevant randomised controlled trials.

Level II

Evidence obtained from at least one properly designed randomised controlled trial.

Level III-1

Evidence obtained from well-designed pseudo-randomised controlled trials (alternate allocation or some other method).

Level III-2

Evidence obtained from comparative studies with concurrent controls and allocation not randomised (
cohort studies
),
case control studies
, or interrupted time series with a control group.

Level III-3

Evidence obtained from comparative studies with historical control, two or more single-arm studies, or interrupted time series without a parallel control group.

Level IV

Evidence obtained from
case series
, either post-test or pre-test and post-test.

http://www.joannabriggs.edu.au/Levels of Evidence FAME

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3053308/

http://www.biomedcentral.com/1471-2288/9/34

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