Birth {lbreg} | R Documentation |
Birth Weight Data
Description
Data used by Wacholder (1986) to illustrate the use of log binomial regression for estimating adjusted relative risks of a low-birthweight baby.
Usage
data("Birth")
Format
A data frame with 900 observations on the following 5 variables.
lowbw
low birth weight delivery (1=yes)
alc
mother's alcohol drinking frequency (1=Light, 2=Moderate, 3=Heavy)
smo
mother smoked (1=no)
soc
mother's social status (1=I and II (lower), 2=III (middle), 3=IV and V (upper))
Source
Stata's online manual http://www.stata.com/manuals13/rbinreg.pdf
References
Wright JT, Waterson EJ, Barrison PJ, et al. (1983). Alcohol consumption, pregnancy and low birthweight. Lancet 1:663-665.
Examples
data(Birth)
dim(Birth)
names(Birth)
[Package lbreg version 1.3 Index]