Table 3.

Comparison of pain scores between the two groups at different time points ($\overline{\text{x}}\pm \text{s}$, score).

Time	Experimental group	Control group	T value	P value
N	30	30
Postoperative	6.63 ± 1.07	6.83 ± 1.15	−0.681	.499
1 wk after operation	4.63 ± 0.83a	5.40 ± 0.98a	−3.193	.002
6 wk after operation	2.86 ± 0.76a,b	3.53 ± 0.92a,b	−3.001	.004
12 week after operation	1.07 ± 0.740a,b,c	1.63 ± 0.828a,b,c	−2.616	.011
Experimental group F for different timepoints for	221.749
Experimental group P for different timepoints	.000
Control group F for different timepoints	14.308
Control group P for different timepoints	.000

Compared with before the operation.

^aP < .05; Compared with 1 week after the operation.

^bP < .05; Compared with 6 week after the operation.

^cP < .05.