The Cochrane Airways Group Register of Trials (CAGR)

About

The CAGR is a unique database containing definite, probable and possible randomised controlled trials relevant to the Group's scope and topics. The CAGR is developed, maintained and administered by the Trials Search Coordinator (TSC) at the Cochrane Airways Group editorial base as a resource for our review authors. References to trial reports are identified through systematic searches of bibliographic databases, and handsearching of journals and conference abstracts.  You can find full details of the search strategy used to identify studies here.

Inclusion criteria

Before a reference is added to the register, the title, abstract and keywords are checked by the TSC and the record is coded as an RCT or CCT according to the Cochrane Collaboration definition. If the study design is unclear from the information available, the record is retained in the Register until the full-text of the paper can be checked and the study design verified. The CAGR includes trials on asthma, COPD, sleep apnoea and bronchiectasis. Each reference is coded for condition so it is then possible to limit a search of the CAGR to the condition of interest e.g. asthma.

Access to the Register

For each new review and review update of interventions for asthma, COPD, sleep apnoea and bronchiectasis, the TSC will conduct a search of the CAGR using a set of keywords agreed with the review author, and forward the results to the lead review author. The Register is also made available to a wider audience through the CENTRAL database on the Cochrane Library.For reviews on interstitial lung disease, pulmonary hypertension, chronic cough, or any other obstructive airways condition not covered by the CAGR, the TSC will automatically search CENTRAL, MEDLINE and EMBASE instead of the Register.