Table 4.

Comparison of VAS scores of patients between the two groups at different time points (x̅ ± sd)

Groups	One day after operation	One week after operation	One month after operation	Two months after operation
Control group (n=30)	3.46±1.07	3.20±1.15	2.68±0.74	2.55±0.91
Observation group (n=30)	4.39±1.25	4.03±1.42	2.77±0.69	2.63±0.82
t	7.365	6.269	0.490	0.166
P	0.007	0.012	0.723	0.892