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Table 8 Results of subgroup analysis for both Asian and Europe/America (West) populations

From: Clinical relevance of the cagA and vacA s1m1 status and antibiotic resistance in Helicobacter pylori: a systematic review and meta-analysis

Virulence factor/region

Clarithromycin

Metronidazole

Amoxicillin

Tetracycline

Levofloxacin

Virulence factor

Region

OR

95% CI

p value

OR

95% CI

p value

OR

95% CI

p value

OR

95% CI

p value

OR

95% CI

p value

cagA

Asia

3.12

0.64–15.17

0.1

5.06

1.24–20.12

0.02

3.26

0.10-97.37

0.49

0.73

0.007–83.60

0.9

5.34

0.04–600.0

0.48

West

0.87

0.31–2.43

0.7

1.59

0.78–3.21

0.1

19.68

2.74-141.18

0.03

NA

NA

NA

11.33

1.39–91.85

0.02

vacA s1m1

Asia

0.22

0.06–0.81

0.02

0.37

0.15–0.90

0.03

0.08

0.002–2.91

0.16

0.13

0.004–4.76

0.27

0.22

0.01–0.03

0.27

West

0.65

0.16–2.52

0.5

0.46

0.13–1.58

0.21

16.58

1.77-154.58

0.01

NA

NA

NA

6.25

1.63–23.84

0.01

vacA s1m2

Asia

0.17

0.04–0.71

0.01

0.47

0.14–1.51

0.2

0.11

0.003–3.94

0.22

0.05

0.001–4.66

0.20

0.23

0.01–3.05

0.26

West

0.10

0.03–0.29

0.01

0.23

0.03–1.41

0.1

NA

NA

NA

NA

NA

NA

0.033

0.006–0.17

0.01

vacA s2m1

Asia

0.04

0.01–0.12

0.07

4.00

0.13-119.23

0.40

0.02

0.01–1.34

0.06

0.02

0.01–1.34

0.06

0.02

0.01–1.34

0.06

West

0.06

0.01–0.06

0.09

0.01

0.00-0.02

0.5

NA

NA

NA

NA

NA

NA

NA

NA

NA

vacA s2m2

Asia

0.06

0.02–0.19

0.01

0.012

0.006–0.02

0.01

0.044

0.019–0.12

0.01

0.035

0.008–0.14

0.001

0.02

0.007–0.08

0.01

West

0.07

0.03–0.15

0.01

0.15

0.05–0.42

0.01

0.024

0.003–0.19

0.001

NA

NA

NA

0.12

0.003–5.75

0.28

cagA-vacA s1m1

Asia

0.53

0.38–0.75

0.07

1.31

0.88–1.94

0.17

NA

NA

NA

NA

NA

NA

NA

NA

NA

West

1.87

0.67–4.86

0.23

0.42

0.07–2.45

0.33

NA

NA

NA

NA

NA

NA

NA

NA

NA

  1. NA not available