birthwt {boot} | R Documentation |
The birthwt
data frame has 189 rows and 10 columns.
Data was collected at the Baystate Medical Center, Springfield, Massachusetts during 1986 to attempt to identify which factors contributed to an increased risk of low birth weight infants. Information was recorded for 189 women of whom 59 had low birth weight infants.
data(birthwt)
This data frame contains the following columns:
low
1
indicates low birth weight (< 2.5kg), 0
indicates normal birth weight.
age
lwt
race
1
(white), 2
(black) and
3
(other).
smoke
1
=smoker, 0
=non-smoker.
ptl
ht
1
=yes, 0
=no.
ui
1
=yes, 0
=no.
ftv
bwt
The data were obtained from
Hosmer, D.W. and Lemeshow, S. (1989) Applied Logistic Regression. John Wiley.
Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.
Venables, W.N. and Ripley, B.D. (1994) Modern Applied Statistics with S-Plus. Springer-Verlag.