Table 6 Blinding assessment of participants and evaluator with James’ Blinding Index and Bang’s Blinding Index
Method | Index | p-value | 95% Confidence Interval | Conclusion |
|---|---|---|---|---|
Participants blinding | ||||
James’ BI | 0.56 | 0.829 | (0.45, 0.67) | Blinded |
Bang’s BI-Active/2 × 5 | 0.75 | < 0.001 | (0.50, 0.99) | Not blinded |
Bang’s BI-Sham/2 × 5 | − 0.61 | 1 | (− 0.90, − 0.33) | Opposite guess |
Assessor blinding | ||||
James’ BI | 0.83 | 1 | (0.70, 0.93) | Blinded |
Bang’s BI-Active/2 × 5 | − 0.10 | 0.85 | (− 0.27, 0.62) | Blinded |
Bang’s BI-Sham/2 × 5 | 0.31 | < 0.001 | (0.09, 0.51) | Not blinded |