Table 2. Distribution, RIs of tumor marker levels, and 90% confidence intervals.

Tumor markers	Gastric cancer (n = 268)	Control (n = 209)
	M (IQR)	M (IOR)	Reference intervals	90% CI
AFP (ng/ml)	1.36 (2.05)	1.26 (0.94)	0–3.69	[3.02–5.49]
NSE (ng/ml)	2.59 (1.09)	2.55 (1.21)	0–4.33	[4.17–4.96]
FER (ng/ml)	76.91 (160.11)	138.03 (202.03)	0–376.87	[365.96–424.65]
CEA (ng/ml)	1.47 (2.39)	1.07 (0.94)	0–3.18	[2.77–3.82]
CA125 (U/ml)	7.31 (10.14)	8.55 (5.65)	0–20.46	[16.82–32.90]
CA153 (U/ml)	4.54 (3.75)	7.01 (7.62)	0–24.46	[21.27–27.91]
CA199 (U/ml)	10.35 (18.61)	7.47 (7.36)	0–24.23	[19.45–29.37]
CA242 (U/ml)	3.28 (4.79)	3.04 (2.01)	0–7.61	[6.70–8.95]