Table 2 Subgroup analysis of positive rate of gastrointestinal infection detection in newborns

All studies

22

4216

46.9 (36.8–57.0)

94

p < 0.01

Test method

574.9365

p < 0.01

 Blood culture

12

1065

34.7 (24.3–46.0)

87

p < 0.01

 Peritoneal culture

9

450

55.8 (33.5–77.0)

96

p < 0.01

 Stool culture

8

2917

21.3 (10.7–34.2)

92

p < 0.01

 Molecular methods

2

251

55.9 (10.0–95.9)

76

p = 0.04

 Others

4

34

31.0 (16.5–47.7)

87

p < 0.01

Economic development level

337.4119

p < 0.01

 High income countries

10

1061

56.5 (42.1–70.4)

95

p < 0.01

 Middle income countries

8

553

39.7 (26.7–53.5)

88

p < 0.01

 Low income countries

4

2602

35.5 (10.3–66.2)

92

p < 0.01

Area

337.4119

p < 0.01

 Asia

10

3143

33.9 (26.2–42.0)

82

p < 0.01

 Europe

5

791

40.6 (20.6–62.3)

90

p < 0.01

 America

5

248

74.3 (64.3–83.2)

59

p = 0.04

 Africa

2

34

55.9 (10.0–95.9)

76

p = 0.04

Sample size

337.4119

p < 0.01

 Small

11

320

53.5 (38.0–68.7)

89

p < 0.01

 Large

11

3896

41.2 (28.9–54.1)

95

p < 0.01