[Retracted] Synergistic Effect of Stereotactic Radiotherapy Combined with Karelizumab on Patients with Advanced NSCLC

Table 3

Comparison of serum indexes between two groups (‾x ± s).

Indicators		Control group (n = 54)	Observation group (n = 46)	t	value
CY211	Before treatment	6.23 ± 2.06	6.38 ± 3.15	0.285	0.775
	After treatment	3.14 ± 1.85^a	2.50 ± 0.85^a	2.159	0.033
MMP-9	Before treatment	1856.39 ± 190.46	1874.23 ± 184.26	0.473	0.636
	After treatment	1524.39 ± 154.29^a	1047.34 ± 80.16^a	36.181	＜0.001
VEGF	Before treatment	749.68 ± 50.29	752.61 ± 54.69	0.278	0.780
	After treatment	469.38 ± 20.49^a	265.49 ± 31.26^a	39.090	＜0.001
CEA	Before treatment	21.95 ± 2.84	20.96 ± 3.15	1.652	0.101
	After treatment	15.24 ± 2.41^a	9.46 ± 1.85^a	13.270	＜0.001

^aCompared with before treatment in the same group, .