What are the “van Tulder criteria” to assess risk of bias?
A. Here are the 12 criteria that the CBRG’s Editorial Board feel are important to assess the internal validity (risk of bias) of a trial in this field. The Cochrane Collaboration now requires that most of these sources are assessed for potential risk of bias. Many argue the fact that blinding is difficult in a rehabilitation setting. Be that as it may, the lack of blinding may still compromise the internal validity of a trial and increases the risk of potential bias. The full list, with definitions, may be downloaded here (RTF – 49k).
