Analysis of demographic characteristics in 3242 young age gastric cancer patients in Korea

Table 1 Demographic and clinicopathologic features of young age in control group n (%)

Features	Group A (n = 350)	Group B (n = 1500)	Group C (n = 1150)	Whole (n = 3000)	P-value
Age (median, yr)	24 ± 1.3	34 ± 2.4	44 ± 3.7	35 ± 4.9	NS
Sex					< 0.05
Male	150 (42.9)	750 (50.0)	750 (65.2)	1650 (55.0)
Female	200 (52.1)	750 (50.0)	400 (34.8)	1350 (45.0)
Indication of endoscopy					NS
No symptom	117 (33.4)	514 (34.2)	499 (43.4)	1130 (37.7)
Dyspepsia	211 (60.3)	798 (53.2)	687 (59.7)	1696 (56.5)
Weight loss	13 (4.7)	26 (1.7)	28 (2.4)	67 (2.2)
Nausea/poor oral intake	54 (15.4)	155 (10.3)	308 (26.8)	517 (17.2)
Others	17 (4.9)	37 (2.5)	28 (2.4)	82 (2.7)
H. pylori (+) & combined IM					< 0.05
Male	5 (3.3)	65 (4.3)	74 (9.9)	144 (8.7)
Female	11 (5.5)	89 (11.9)	56 (14.0)	156 (11.6)

Group A, 18-30 years of age; Group B, 31-40 years of age; Group C, 41-45 years of age; Whole, 18-45 years of age. NS: Not significant; IM: Intestinal metaplasia; H. pylori: Helicobacter pylori.