Table 9.

The Jadad scoring system and the interpretation of each score.

Question	Yes/No
Was the study described as random?	1/0
Was the randomization scheme described and appropriate?	1/0
Was the study described as double-blind?	1/0
Was the method of double-blinding appropriate?	1/0
Was there a description of dropouts and withdrawals?	1/0
Quality Assessment Based on Total Score
Jadad Score	Quality of evidence
0–2	Low
3–5	High