Cochrane works collaboratively with contributors around the world to produce authoritative, relevant, and reliable evidence, in the form of Cochrane Reviews.

Cochrane Reviews are systematic reviews of primary research in human health care and health policy, and are internationally recognized as the highest standard in evidence-based health care resources. They investigate the effects of interventions for prevention, treatment, and rehabilitation. They also assess the accuracy of a diagnostic test for a given condition in a specific patient group and setting. They are published online in the Cochrane Library.

Each systematic review addresses a clearly formulated question. In the case of this particular review the question was:

What are the effects of different treatments in people with postpolio syndrome (PPS)?

To answer this question, Cochrane’s contributors search for and collate all the existing primary research on a topic that meets certain criteria; then they assess it using stringent guidelines, to establish whether or not there is conclusive evidence about a specific treatment.

Cochrane Reviews are peer reviewed and dynamic – they are updated regularly to incorporate new research. This ensures that treatment decisions can be based on the most up-to-date and reliable evidence. The Review below (published online on 18 May 2015 and assessed as up-to-date as at 31 July 2014) updates the original 2011 Review.

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