Table 5 Influence of age at diagnosis with GC of first-degree relatives on participants’ gastric pathology

 < 50

40/73

1.905

0.894–4.057

2.185

0.965–4.950

 ≥ 50

102/230

1.026

0.587–1.793

1.098

0.598–2.017

 ≥ 60

159/353

1.092

0.643–1.855

1.202

0.674–2.145

 ≥ 70

114/262

0.969

0.561–1.675

1.210

0.666–2.198

 ≥ 80

41/87

1

1

 < 50

11/73

3.667

1.136–11.838

4.921

1.439–16.832

 ≥ 50

40/230

2.817

1.080–7.345

3.410

1.256–9.257

 ≥ 60

54/353

2.596

1.018–6.621

3.239

1.222–8.582

 ≥ 70

35/262

2.083

0.797–5.447

2.898

1.065–7.887

 ≥ 80

6/87

1

1

 < 50

7/73

1.556

0.485–4.992

2.372

0.692–8.130

 ≥ 50

17/230

0.798

0.320–1.990

1.039

0.398–2.711

 ≥ 60

36/353

1.154

0.500–2.661

1.517

0.631–3.650

 ≥ 70

29/262

1.151

0.489–2.709

1.578

0.639–3.893

 ≥ 80

9/87

1

1