Table 1. Characteristics of the study subjects.

Variables	Mild superficial gastritis	Atrophic gastritis	P*	Gastric cancer	P**
Total	n = 609	n = 594		n = 249
Age(years): Mean±SD	53.10±9.86	55.03±8.94	0.000	58.40±11.42	0.000
Range	17–85	28–82		26–85
Gender			0.006		0.000
Female	313(51.4%)	257(43.3%)		83(33.3%)
Male	296(48.6%)	337(56.7%)		166(66.7%)
Smoking			0.719		0.001
Smoker	131(28.9%)	143(30.0%)		56(44.4%)
Non-smoker	323(71.1%)	333(70.0%)		70(55.6%)
Drink			0.336		0.000
Drinker	90(19.8%)	107(22.5%)		48(38.4%)
Nondrinker	364(80.2%)	369(77.5%)		77(61.6%)
H. pylori infection status			0.000		0.000
HP(+)	129(21.2%)	364(61.3%)		136(54.6%)
HP(−)	480(78.8%)	230(38.7%)		113(45.4%)

P*: atrophic gastritis vs. mild superficial gastritis, P**: Gastric cancer vs. mild superficial gastritis.