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Table 4 Safety and efficacy indices in primary SMILE and in Re-SMILE. t = t-test statistic, p = p-value, z = Wilcoxon signed rank statistic

From: Cap-preserving SMILE Enhancement Surgery

  Mean ± SD Range Significance of difference between the two procedures
Primary SMILE Safety Index 1.65 ± 0.62 1.0 to 3.02 t = 1.716, p = 0.124
Re-SMILE Safety Index 1.16 ± 0.34 0.67 to 1.67
Primary SMILE Efficacy Index 1.14 ± 0.24 1.0 to 1.67 z = −0.141, p = 0.888
Re-SMILE Efficacy Index 1.11 ± 0.26 0.67 to 1.50