How do I search for randomized controlled studies (RCTs) in EMBASE using the Wong-filter?
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How do I search for randomized controlled studies (RCTs) in EMBASE using the Wong-filter?
This search strategy shall help you to search for randomized controlled trials (RCTs) in EMBASE based on the publication of Wong *.
Depending on the desired sensitivity (number of hits) and specifity, you can choose one of four different search strategies:
| Characteristics | Search strategy |
|---|---|
| Best sensitivity | random?/(ti;ab) OR clinical trial?/(ti;ab;te;ct) OR CT d health care quality |
| Small drop in sensitivity with a substantive gain in specificity | random?/(ti;ab) OR clinical trial?/(ti;ab;te;ct) OR CT d treatment outcome |
| Best specificity | double blind?/(ti;ab;te;ct) OR placebo?/(ti;ab) OR blind?/(ti;ab) |
| Best optimization of sensitivity and specificity | random?/(ti;ab) OR placebo?/(ti;ab;te;ct) OR double-blind?/(ti;ab) |
* Wong SS, Wilczynski NL, Haynes RB. Developing optimal search strategies for detecting clinically sound treatment studies in EMBASE. Journal of the Medical Library Association 2006;94(1):41-7. [Ovid]
