[Retracted] Efficacy of Neoadjuvant Chemotherapy plus Limb-Sparing Surgery for Osteosarcoma and Its Impact on Long-Term Quality of Life

Table 4

Comparison of survival.

Groups	n	1-year survival (n, %)	2-year survival (n, %)	3-year survival (n, %)	Mean survival ( ± s, month)
Control group	45	41 (91.11)	36 (80.00)	27 (60.00)	29.56 ± 0.88
Study group	45	44 (97.78)	41 (91.11)	38 (84.44)	33.72 ± 1.08
t/χ ^2	—	1.906	3.552	6.702	20.031
	—	0.167	0.049	0.010	<0.001