Birth Weight (BW) data
Table of Contents
Description
The data were collected at the Baystate Medical Centre, Massachusetts, in 1986. Physicians have been interested in studying low weight at birth for several years, because underweight babies have high rates of infant mortality and infant anomalies. The behaviour of the mother-to-be during pregnancy (diet, smoking habits) can have an impact on the chances of having a full-term pregnancy, and thus of giving birth to a child of normal weight. The data include information on 189 women who came to the centre for consultation.
Variable Names
| Variable | Explanation (Unit) |
|---|---|
| age | Age of the mother |
| lwt | Weight of the mother at the last menstrual period (pounds) |
| race | Race of the mother, 1=white, 2=black, 3=other |
| smoke | smoking status of the mother, 1=smoker, 0=non-smoker |
| ptl | Number of previous premature births |
| ht | History of hypertension, 1=yes, 0=no |
| ui | Uterine irritability, 1=yes, 0=no |
| fvt | Number of medical consultations during the first trimester of pregnancy |
| bwt | Weight at birth (g) |
Load data into R
load(url("http://paulblanche.com/files/BW.rda")) head(BW)
References
Lafaye de Micheaux P., Drouilhet R., and Liquet B., (2014) The R software. Fundamentals of Programming and Statistical Analysis, Springer, Collection: Statistics and Computing, vol. 40, 655 p., ISBN: 978-1-4614-9019-7.