Table 3. Comparison of pre- and post-operative QOL between observation group and control group.

QOL	Observation group (n=55)	Control group (n=55)	P value
Pre-operativeD1	75.33±9.97	74.24±9.55	0.559
POW 1	56.40±7.99	47.78±8.54	0.028
POW 2	65.07±8.82	58.56±8.69	0.033
POW 4	69.89±9.41	64.05±9.08	0.014
POW 8	70.36±9.44	64.09±9.19	0.011

QOL, quality of life; POW, postoperative week.