Table 3. Blinding Integrity Assessments.
Group | No. (%) | Total, No. | P valuea | |
---|---|---|---|---|
Correct guesses | Wrong guesses | |||
Participants | ||||
Double active | 35 (57) | 26 (43) | 61 | .31 |
tDCS only | 22 (32) | 47 (68) | 69 | .004 |
Double sham | 25 (36) | 44 (64) | 69 | .03 |
Total | 82 (41) | 117 (59) | 199 | .02 |
Raters | ||||
Double active | 26 (43) | 35 (57) | 61 | .31 |
tDCS only | 12 (17) | 57 (83) | 69 | <.001 |
Double sham | 29 (42) | 40 (58) | 69 | .23 |
Total | 67 (34) | 132 (66) | 199 | <.001 |
P Values were computed using a χ2 1-sample proportion test.