(1) Was the study described as randomized?
(2) Was the randomization protocol detailed and appropriate? (3) Was the study described
as double-blind? (4) Was the blinding process detailed and appropriate? (5) Did the study have a control group? (6) Was the control detailed and appropriate? (7) Were there adequate exclusion criteria? (8) Was the intervention used at a therapeutic dose? (9) Was there a description of withdrawals and dropouts? and (10) Were the data clearly and adequately reported? Using this scale, each trial was given a score between
0 and 10, with higher scores reflecting superior methodologic quality.