pubh (version 1.3.2)

Brenner: Prevalence of Helicobacter pylori infection in preschool children.

Description

A data set containing the prevalence of Helicobacter pylori infection in preschool children according to parental history of duodenal or gastric ulcer.

Usage

Brenner

Format

A labelled tibble with 863 rows and 2 variables:

ulcer

History of duodenal or gastric ulcer, factor with levels "No" and "Yes".

infected

Infected with Helicobacter pylori, factor with levels "No" and "Yes".

Examples

require(dplyr, quietly = TRUE)
data(Brenner)

Brenner %>%
  select(infected, ulcer) %>%
  cross_tbl(by = "infected")

contingency(infected ~ ulcer, data = Brenner, method = "cross.sectional")