Risk of bias assessment of randomised controlled trials referenced in the 2015 American Heart Association guidelines update for cardiopulmonary resuscitation and emergency cardiovascular care: a cross-sectional review.

The proportion of RCTs with an unclear risk of bias was still high for random sequence generation and allocation concealment in the 2015 AHA guidelines for CPR and ECC. The risk of bias should be considered when interpreting and applying the CPR guidelines. Authors should plan and report their research using CONSORT guidelines and the Cochrane Collaboration's tool to reduce the risk of bias.