Table 2.

Frequency of Circulating IGFBP7

Group	Mean±SEM	p-value	No.	Positive (%, 95% CI)
Normal controls	1.821±0.0663	-	88	8 (9.1, 4.7–16.9)
All EJA	3.436±0.1998	<0.001	120	76 (63.3, 54.4–71.4)
Early-stage EJA	3.863±0.5666	<0.001	35	19 (54.3, 36.9–70.8)

IGFBP7, insulin-like growth factor binding protein 7; SEM, standard error of the mean; CI, exact confidence interval; EJA, esophagogastric junction adenocarcinoma.