Table 3 Summary statistics from fitting meta-regression in the best model.

From: Changing trends in the prevalence of H. pylori infection in Japan (1908–2003): a systematic review and meta-regression analysis of 170,752 individuals

Fixed effect parameter estimates:

Variables

OR (95% CI)

P

Source of population

 Community-based

1

 

 Clinical-based

1.12 (0.73–1.52)

0.56

Diagnostic test

 Serology

1

 

 Others*

0.73 (0.37–1.08)

0.08

ELISA kits

 Domestic

1

 

 Foreign

1.15 (0.82–1.49)

0.41

Research year

 Earlier than 2000

1

 

 Later than 2000

0.89 (0.59–1.19)

0.43

Approximated significance of smooth terms:

 

Estimated degree of freedom

Reference degree of freedom

Chi square

P

 Birth year

7.3

8.1

4048

<0.00001

Random effect parameter estimates:

 Study ID

37.2

41.0

1881

<0.00001

  1. *Others include: urinary assay, salivary assay, stool antigen test,13C-urea breath test, and gastric biopsy.