: Data-Field 23074

Data-Field 23074

Description:	H. pylori Definition II seropositivity for Helicobacter pylori
Category:	Biological samples ⏵ Blood assays ⏵ Infectious Diseases
	Biomarkers

Participants

9,683

Categorical (single)

Both sexes

Jun 2018

9,960

Data

Defined (2)

Jun 2018

Accruing

Derived

o1 s2

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Data

9,960 items of data are available, covering 9,683 participants, encoded using Data-Coding 12.
Defined-instances run from 0 to 1, labelled using Instancing 2.

Graph illustrating main data

2 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
9,423 participants, 9,423 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
537 participants, 537 items
Graph illustrating main data

Notes

H. pylori Definition II seropositivity for Helicobacter pylori

Defined as positive if: two or more of antigen VacA > 100, antigen OMP > 170, antigen GroEL > 80, antigen Catalase > 180, antigen UreA > 130.

The CagA antigen was excluded from the data generated in the 2nd week because of a lab-based handling mistake. Hence, this second definition is available without the CagA antigen.

0 Related Data-Fields

There are no related data-fields

1 Resource

Preview	Name	Res ID
	Serological measurement of infectious disease pathogens	1348

1 Application

Application ID	Title
45925	Risk Factors, Biomarkers and Impact of Major Vision-Threatening Eye Diseases

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