Macmahon {pubh}

Breast cancer and age of childbirth.

Description

An international case-control study to test the hypothesis that breast cancer is related to the age that a woman gives childbirth.

Usage

Macmahon

Format

A labelled tibble with 185 rows and 2 variables:

cancer

Diagnosed with breast cancer, a factor with levels "No" and "Yes".

age

Age mother gives childbirth, factor with levels "<20", "20-24", "25-29", "30-34" and ">34".

Source

Macmahon, B. et al. (1970). Age at first birth and breast cancer risk. Bull WHO 43, 209-221.

Examples

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

Macmahon %>%
  select(cancer, age) %>%
  cross_tbl(by = "cancer")