Validity Assessment
The score initially described by Jadad et al7 was modified for
veterinary use and was used to provide an indication of
methodologic quality. Studies were rated as blinded and received
1 point if the outcome was assessed in blind manner by a blinded
observer. A 2nd point was given if the owner was blinded to avoid
a transferred placebo effect on the animal. Studies were given
additional points if reported as randomized and if the method of