Table 3.

Serum CEA levels of presurgery, postsurgery, and tumor recurrence in both immunotherapy group and control group.

Group	Total	Immunotherapy group	Control group	P value
Presurgery
Number	204	74	130
Mean ± SD	15.88 ± 20.63	13.79 ± 11.99	17.05 ± 24.13	0.13
Range	10–48	10–48	10–48
Postsurgery
Number	204	74	130
Mean ± SD	2.78 ± 1.11	2.91 ± 1.10	2.70 ± 1.12	0.81
Range	2–5	2–5	2–5
Tumor recurrence
Number/total number	48/204	17/74 (23.0%)	31/130 (23.8%)	0.89
Mean ± SD	8.21 ± 5.96	7.86 ± 6.05	8.40 ± 6.00	0.58
Range	5–10	5–10	5–10