Blinding Index
The principal assessment of blinding was performed prior to discharge after PCI or placebo. The blinding index for the PCI group was 0.01 (95% CI, -0.05 to 0.06) and the placebo group was -0.09 (95% CI, -0.15 to -0.03) demonstrating effective blinding. The index for blinded staff for patients in the PCI group was 0.01 (95% CI, -0.01 to 0.04) and in the placebo group was 0 (95% CI, -0.03 to 0.03) demonstrating effective blinding. At the end of the 12-week follow-up period, the reassessment values were: 0.19 (95% CI, 0.05 to 0.34) in the PCI group and 0.24 (95% CI, 0.09 to 0.38) in the placebo group. For the corresponding staff groups, it was 0.01 (95% CI, -0.01 to 0.02) and 0 (95% CI, -0.02 to 0.02).