Table 2.

Mean, standard deviation (SD) values of pain scores at different days within each week

	Mean	SD	P-value
Week 1	7.0 a	2.0	<0.001*
Week 2	6.5 b	2.1
Week 3	5.9 c	2.1
Week 4	4.8 d	2.0
Week 5	4.0 e	2.1
Week 6	3.3 f	2.1
Week 7	2.4 g	2.0
Week 8	2.0 h	2.1

^*Significant at P ≤ 0.05, Different superscripts in the same column are statistically significantly different.