Evidenz-Filter und Clinical Queries

Das Hedges-Projekt ist eine Gruppe um Haynes an der McMaster-University in Kanada. Die Gruppe erstellt Evidenz-Suchstrategien für MEDLINE in der Ovid-Syntax and ihre Entsprechung in der PubMed-Datenbank - (Clinical Queries).

The Clinical Query limits allow you to restrict the results of a Medline search to certain types of studies. For instance, if you searched for the MeSH heading ASTHMA/ and then wanted to limit the results to therapeutic studies, you could click on the Limit icon and choose one of the Therapy limits.
Each Clinical Query limit has three different versions: one that maximises sensitivity (so your search results might include some irrelevant studies but are more likely to be comprehensive); one that maximises specificity (so your final results might exclude some relevant studies but are more likely to include the very relevant ones); and one that optimises the trade-off between sensitivity and specificity.

Es kann nach folgenden Kategorien gesucht werden:
Appropriateness
Process Assessment
Outcomes Assessment
Costs
Economics
Qualitative Studies
Auch diese Filter wurden von der Gruppe um Haynes et al., dem so genannten Hedges Project, entwickelt.