births {openintro}

North Carolina births, 100 cases

Description

Data on a random sample of 100 births for babies in North Carolina where the mother was not a smoker and another 50 where the mother was a smoker.

Usage

births

Format

A data frame with 150 observations on the following 14 variables.

f_age

Father's age.

m_age

Mother's age.

weeks

Weeks at which the mother gave birth.

premature

Indicates whether the baby was premature or not.

visits

Number of hospital visits.

gained

Weight gained by mother.

weight

Birth weight of the baby.

sex_baby

Gender of the baby.

smoke

Whether or not the mother was a smoker.

Source

Birth records released by North Carolina in 2004.

See Also

We do not have ideal provenance for these data. For a better documented and more recent dataset on a similar topic with similar variables, see births14. Additionally, ncbirths also contains similar data.

Examples

library(ggplot2)

ggplot(births, aes(x = smoke, y = weight)) +
  geom_boxplot()