表 2. Comparison of serum indicators in each group.

各组血清指标对比

Group	n	PGⅠ/(μg/L)	PGⅡ/(μg/L)	PGⅠ/PGⅡ	CEA/(ng/mL)	CA199/(U/mL)	CA724/(U/mL)
a P<0.05, vs. healthy group; b P<0.05, vs. benign group; c P<0.05, vs. low grade group; d P<0.05, vs. high grade group.
Healthy	104	135.64±21.38	12.06±2.51	11.25±2.06	2.89±0.57	11.49±2.23	3.17±0.63
Benign	115	115.43±20.71a	13.49±2.68	8.57±1.58a	3.04±0.60	12.06±2.35	3.32±0.66
Low grade	112	103.29±20.12a, b	14.81±2.37a, b	6.97±1.24a, b	6.72.±1.39a, b	23.58±4.39a, b	7.19±1.32a, b
High grade	109	91.48±20.23a, b, c	15.96±2.45a, b, c	5.73±1.16a, b, c	8.45±1.64a, b, c	27.87±5.26a, b, c	8.85±1.57a, b, c
Gastric cancer	109	57.86±8.33a, b, c, d	27.52±5.37a, b, c, d	2.10±0.41a, b, c, d	69.72±11.46a, b, c, d	126.47±24.38a, b, c, d	65.08±10.57a, b, c, d
F		4189.499	3976.748	4008.428	5016.006	3709.426	5316.842
P		0.000	0.000	0.000	0.000	0.000	0.000