Connexin 32 and 43 promoter methylation in Helicobacter pylori-associated gastric tumorigenesis

Table 1 Sex, age and disease duration of cases of each stage (mean ± SD)

Stage	n	M	F	Age, yr	Disease duration (yr)
NGM without H. pylori infection	25	14	11	54.12 ± 8.21 (45-60)	0.85 ± 0.64 (0.12-1.23)
NAG with H. pylori infection	24	13	11	56.44 ± 11.29 (47-65)	0.85 ± 0.35 (0.37-1.03)
CAG with H. pylori infection	25	11	14	55.90 ± 7.80 (45-66)	0.73 ± 0.24 (0.13-0.90)
IM with H. pylori infection	28	12	16	52.16 ± 8.59 (48-68)	0.90 ± 0.65 (0.47-1.04)
DYS with H. pylori infection	24	12	12	54.05 ± 7.36 (48-69)	0.73 ± 0.57 (0.56-1.15)
GC with H. pylori infection	30	17	13	55.43 ± 10.33 (46-73)	0.60 ± 0.46 (0.10-1.04)

NGM: Normal gastric mucosa; NAG: Non-atrophic gastritis; CAG: Chronic atrophic gastritis; IM: Intestinal metaplasia; DYS: Dysplasia; GC: Gastric cancer.