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EBM guide (page 2)
page 1
The process of EBM | Types of EBM searches | Types of clinical questions
Search in EBM reviews using the Cochrane Database of Systematic Reviews | What is a systematic review? | What is EBM Reviews: the Cochrane Database of Systematic Reviews? | What is the Cochrane collaboration? | Divide the question into concepts | Search and results
Search in Medline (OVID) and then apply the EBM reviews limit | What is an EBN reviews limit? | The Cochrane databases | Search and results
page 2
What are Clinical Queries limits? | Search strategies used for OVID Medline Clinical Queries limitss | Search and results
What are PubMed clinical queries? | Search and results
What are Clinical Queries limits?
Clinical Queries limits are Medline search strategies developed by medical informatics researchers and designed to retrieve clinically sound studies.
When combined with your subject search these limits will narrow your search to studies which use the appropriate study design to answer your question.
Search strategies used for OVID Medline Clinical Queries limits
| Question type | Optimised search | Most specific search | More sensitive search |
|---|---|---|---|
| Therapy | randomized controlled trial.pt OR randomized.mp OR placebo.mp | randomized controlled trial.pt OR randomized controlled trial.mp |
clinical trial.mp OR clinical trial.pt OR random$.mp OR tu.xs |
| Diagnosis | sensitiv$.mp OR predictive value$.mp OR accurac$.tw |
specificity.tw | sensitiv$.mp OR diagnos$.mp OR di.fs |
| Aetiology | risk.mp OR mortality.mp OR cohort.tw |
relative risk$.tw OR risks.tw OR cohort stud$.mp |
risk$.mp OR exp cohort studies OR between group$.tw |
| Prognosis | prognosis/ OR diagnosed.tw OR Cohort$.mp OR predictor$.tw OR death.tw OR exp models, statistical |
prognos$.tw OR first episode.tw OR cohort.tw |
incidence/ OR exp mortality OR follow-up studies/ OR mortality/ OR prognos$.tw OR predict$.tw OR course$.tw |
| Filter terms on this table are taken from OVID Medline Clinical Queries and these are based on the work of R. Brian Haynes MD, PhD et al. of the Health Information Research Unit (HIRU) at McMaster University. http://www.ovid.com/site/products/ovidguide/haynes.htm | |||
Search and results
- Click Limits on Medline menu-bar.
- Select the search that you need to limit.
- Scroll down to the Clinical Queries limits.
- Choose the appropriate filter by highlighting the filter name, i.e. Therapy
. - Click Limit search.
- The results of the limit will appear in the search history box.
Evaluate the results of the search. If you would like to broaden the results try applying the optimized or sensitive versions of the therapy filter.
What are PubMed clinical queries?
PubMed clinical queries are the filters on PubMed.
PubMed filters are divided into therapy, diagnosis, etiology and prognosis as well as sensitive or specific.
There is an additional single filter for systematic review.
Search and results
Open the database PubMed
In the left side index under PubMed Services click on Clinical Queries
In the category and emphasis boxes click on therapy and specificity
In the search field enter the term glucosamine and osteoarthritis and click on go.
The result is around 15 articles (this number will continually change in time as more records are added to the database).
Evaluation
- Have you formulated your question properly?
- Do you need to refine your search?
- Have you used subject headings? Are they exploded?
- Are you using the correct filter?