Table 2.

Mixed ANOVA results for surgical impact on VAS, ODI, and regional kyphosis angle.

Variable	Time Point	OPSF	PPSF
VAS	Preoperative	8.67 ± 0.75	8.18 ± 0.89
	1-mo post	4.33 ± 0.62	3.32 ± 0.40
	9-mo post	2.47 ± 0.76	2.09 ± 0.55
ODI	Preoperative	82.00 ± 2.83	82.00 ± 3.24
	1-mo post	14.00 ± 2.00	8.80 ± 2.38
	9-mo post	6.80 ± 2.11	3.90 ± 1.20
Regional kyphosis angle	Preoperative	14.20 ± 5.43	14.40 ± 8.27
	1-mo post	5.27 ± 2.86	8.70 ± 4.73
	9-mo post	9.80 ± 5.24	8.90 ± 4.68

Values are the means ± SD (SD, standard deviation).