Table 3.

Comparisons of clinical outcomes between two groups ^a

	TPPA Group (n = 62)	CTPA Group (n = 62)	P Value b
VAS score, mean ± SD
Preoperative	7.24 ± 1.35	7.01 ± 1.22	0.652
1d-Postoperative	3.29 ± 0.37	4.74 ± 0.52	0.001
3 m-Postoperative	1.05 ± 0.07	1.25 ± 0.08	0.372
6 m-Postoperative	0.65 ± 0.05	0.75 ± 0.07	0.625
12 m-Postoperative	0.25 ± 0.04	0.28 ± 0.06	0.743
P Value (within) c	< 0.001	< 0.001
ODI score, mean ± SD
Preoperative	78.52 ± 8.82	79.76 ± 7.87	0.848
1d-Postoperative	56.24 ± 7.66	59.86 ± 7.54	0.042
3 m-Postoperative	30.05 ± 5.72	31.25 ± 5.62	0.767
6 m-Postoperative	20.65 ± 4.52	22.75 ± 4.72	0.853
12 m-Postoperative	18.25 ± 4.10	19.28 ± 4.21	0.891
P Value (within) c	< 0.001	< 0.001

^a Data are reported as n (%) or mean ± SD

^b Independent t test. The P values shown are for intergroup comparisons. Significance was accepted for P<0.05

^c Paired t test. The P values shown are for intragroup comparisons. Significance was accepted for P<0.05