Table 2: The Jadad Scale.

Question Response option and punctuation

(1) Was the study described as randomized?

Yes = 1

No = 0

(2) Was the double blinded correct?

Yes = 1

No = 0

(3) Losses and exclusions were described?

Yes = 1

No = 0

(4) The randomization was adequate?

Yes = 1

No = -1

(5) The blinding of methodology was correct?

Yes = 1

No = -1