Individual having a parent with early-onset gastric cancer may need screening at younger age

Table 4 Age at diagnosis of patients with a first-degree family member diagnosed with gastric cancer before 50 years of age and patients without a first-degree family history n (%)

Patient’s age at diagnosis, (yr)	Patients with family member diagnosed before 50 yr of age			Patients without a first-degree family history
	Father	Mother	Sibling
	n = 39	n = 24	n = 100	n = 3358
< 40	10 (25.6)	5 (20.8)	7 (7.0)	239 (7.1)
40-49	13 (33.3)	8 (33.3)	19 (19.0)	610 (18.2)
50-59	10 (25.6)	6 (25.0)	31 (31.0)	854 (25.4)
≥ 60	6 (15.4)	5 (20.8)	43 (43.0)	1655 (49.3)
P-value1	< 0.001	0.004	0.573

¹Compared with patients without first-degree family history, χ² test.