A systematic literature search is the foundation of a good systematic review. Cochrane Airways has devoted significant resources to building up the Cochrane Airways Group Register of controlled clinical trials (CAGR). Therefore, for asthma, COPD, bronchiectasis and obstructive sleep apnoea, our Information Specialist searches the CAGR, and searches other databases only for conditions not fully covered by the CAGR. In addition, review teams will need to search both clinicaltrials.gov and the WHO trials registry portal , and any relevant manufacturer’s websites. Full details about literature searching and support are available here.
Pre-publication literature searches
Cochrane Reviews must have had a full literature search within a year before publication. We aim to have the search date within 6 months if possible. The procedure we use to meet this target is here.