birth: birth: Risk Factors Associated with Low Birth Weight

In thoree/stat340: Data and functions for BIAS at NMBU

birth: Risk Factors Associated with Low Birth Weight

Description

This data set contains records of the birth weight for 189 newborn babies from Massachusetts, USA, and some additional variables regarding the mothers.

Usage

birth

Format

A data frame with 189 observations (rows) and 5 variables (columns).

	Column name	Data type	Description	Values
[,1]	LOW	factor	YES if birth weight is below 2500g, otherwise NO	(NO, YES)
[,2]	AGE	numeric	The age of the mother in years	(14 - 45)
[,3]	LWT	numeric	The mother's weight in pound at last menstrual period	(80 - 250)
[,4]	SMK	factor	YES if mother smokes, otherwise NO	(NO, YES)
[,5]	BTW	numeric	The birth weight of the baby in g	(709 - 4990)

Details

This data has a subset of the variables from the original data set. The recorded birth weight were collected in 1989 at the Baystate Medical Centre, Springfield. The researchers were interested in factors associated with the low birth weight. The World Health Organization’s defines low birth weight as less than 2500 grams.

Source

The original data set, birthwt, can be found here.

References

Hosmer, D.W., Lemeshow, S. (1989) Applied Logistic Regression. New York: Wiley.

Examples

# The first 10 observations
head(birth, n = 10)

# A short summary of the variables
summary(birth)

# Linear model with interaction term
lm(BWT ~ LWT*SMK, data = birth)

thoree/stat340 documentation built on June 30, 2024, 4:04 p.m.