Table 3 Subgroup analysis for studies of gastric cancer incidence in patients with gastric atrophy or intestinal metaplasia

Age (mean, years)

≥55

4⁽[11, 25, 35, 36]⁾

96

7⁽[12, 18, 19, 26, 36, 39, 40]⁾

94

<55

3⁽[10, 17, 38]⁾

13

2⁽[27, 38]⁾

90

Male (% study population)

≥50

3⁽[8, 25, 36]⁾

98

6⁽[12, 26, 27, 36, 38, 40]⁾

95

<50

4⁽[10, 11, 17, 38]⁾

0

2⁽[18, 39]⁾

92

Country/Region

Asia

3⁽[8, 10, 25]⁾

94

1⁽[27]⁾

NA*

Europe

5⁽[11, 17, 35, 36, 38]⁾

82

4⁽[12, 36, 38, 40]⁾

89

U.S.A.

0

NA*

4⁽[18, 19, 26, 39]⁾

96

Study Quality (Newcastle-Ottawa Scale score)

High (5–6)

4⁽[11, 25, 36, 38]⁾

95

5⁽[18, 27, 36, 38, 39]⁾

90

Moderate (3–4)

4⁽[8, 10, 17, 35]⁾

72

4⁽[12, 19, 26, 40]⁾

88