Table 1.

Comparison of demographics and clinical characteristics among individuals with no IM, OLGIM stage I, stage II, and stage III–IV in the training sample.

	No IM (n = 2944)	stage I (n = 1269)	stage II (n = 263)	stage III–IV (n = 124)	P value
Age, years					<0.001
40–49	903	302	50	16
50–59	1041	444	81	27
60–69	733	393	101	56
>69	267	130	31	25
Gender					0.021
Female	1549	642	125	50
Male	1395	627	138	74
Body mass index					0.271
≤18.5	160	90	14	4
18.5–23.9	1793	770	163	83
>23.9	991	409	86	37
Helicobacter pylori
Negative	1738	676	141	74	0.003
Positive	1206	593	122	50
CEA					0.387
Negative	2847	1229	250	118
Positive	97	40	13	6
PG I, ng/mL					<0.001
≤42.16	126	75	16	11
42.16–56.51	126	79	15	12
>56.51	2692	1115	232	101
PG II, ng/mL					0.108
≤5.47	158	51	18	10
5.47–9.80	875	381	88	41
>9.80	1911	837	157	73
PG I/II ratio					0.045
≥5.25	2676	1126	234	106
<5.25	268	143	29	18
G-17, pmol/L					0.165
≤1.00	1611	713	155	70
1.00–7.98	419	185	33	26
>7.98	914	371	75	28
Family history					0.001
No	2592	1073	216	112
Yes	352	196	47	12
Smoking					0.016
No	2289	965	185	88
Yes	655	304	78	36
Alcohol drinking					0.255
No	2429	1055	206	99
Yes	515	214	57	25
High salt diet					0.045
Occasional	1740	703	139	75
Regular	1204	566	124	49
Red meat					0.910
Occasional	1201	526	106	54
Regular	1743	743	157	70
White meat					0.319
Occasional	1614	703	159	65
Regular	1330	566	104	59
Green vegetables					0.040
Occasional	591	230	62	33
Regular	2353	1039	201	91
Fresh fruits					0.033
Occasional	1365	582	146	57
Regula0072	1579	687	117	67

IM, intestinal metaplasia; OLGIM, Operative Link on Gastritis Intestinal Metaplasia; CEA, carcinoembryonic antigen; PG, pepsinogen; G-17, gastrin-17. Fresh fruit = Occasional; Regular.