Table I.

Baseline characteristics of N and S patients.

Characteristics	N	S
Age (mean ± SD, year)	50.1±13.2	62.5±10.4
Male (n, %)	9, 30%	10, 45.5%
Smoker (n, %)	3, 10%	5, 22.7%
H. pylori (n, %) (Clinical detection)	0	0
H. pylori (n, %) (Sequencing >0.5%)	2, 6.7%	4, 13.3%
Body mass index (mean ± SD)	24.0±3.1	23.6±3.3
Endoscopic results	Non-atrophic gastritis	Chronic atrophic gastritis