Table 1

Cochrane criteria and risk of bias assessment of RCTs and CCTs

  1. Is a method of randomisation applied?

  2. Is randomisation blinded?

  3. Are the patients blinded?

  4. Is the therapist blinded?

  5. Is the outcome assessor blinded?

  6. Are the groups comparable?

  7. Is there an acceptable lost-to-follow-up?

  8. Is there an intention-to-treat?

  9. Are treatments comparable?