Table 1.

The preoperative and postoperative demographics (mean ± SD) for the SMILE and FS-LASIK group

Parameters		SMILE group	FS-LASIK group	p1-value
Age (years old)		23.9 ± 4.8	24.4 ± 4.9	0.605
SE(D)	Preop	−7.964 ± 0.943	−8.390 ± 1.372	0.078
	Post 1mo	−0.194 ± 0.549*	−0.230 ± 0.487*	0.740
	Post 6mo	−0.156 ± 0.486*	−0.194 ± 0.459*	0.677
	Post 12mo	−0.204 ± 0.461*	−0.334 ± 0.441*	0.169
	p0-value	0.119
Astigmatism (D)	Preop	−0.786 ± 0.508	−0.806 ± 0.736	0.846
	Post 1mo	0.005 ± 0.377*	−0.031 ± 0.453*	0.655
	Post 6mo	−0.163 ± 0.321*	−0.102 ± 0.398*	0.326
	Post 12mo	−0.046 ± 0.356*	−0.031 ± 0.352*	0.832
	p0-value	0.782
UDVA (LogMAR)	Preop	−1.292 ± 0.274	−1.335 ± 0.289	0.427
	Post 1mo	0.129 ± 0.167*	0.025 ± 0.111*	<0.001
	Post 6mo	0.104 ± 0.110*	0.045 ± 0.121*	0.023
	Post 12mo	0.099 ± 0.106*	0.032 ± 0.176*	0.021
	p0-value	0.481

SD: standard deviation. Preop: preoperative. Post 1mo: at 1 month postoperatively. Post 6mo: at 6 months postoperatively. Post 12mo: at 12 months postoperatively. p₀ = p value of the difference for the pre and post-operative variation of SE, astigmatism and UDVA between the SMILE and FS-LASIK group. p₁ = p value of the difference in age, SE, astigmatism and UDVA at each point of time between the SMILE and FS-LASIK group. When p < 0.05, the difference was statistically significant. *Compared with that before the operation, p < adjusted alpha