Description Usage Format Source References Examples
Data were collected at Baystate Medical Center, Springfield, Mass. during 1986, as part of a study to identify risk factors for low-birthweight babies.
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A data frame with 189 observations on the following 11 variables:
id
Identificatin code
low
low birthweight (defined as less than 2500g) 0 = No, 1 = Yes
age
Age of mother (years)
lwt
weight of mother at last menstrual period (pounds)
race
Race (1 = white, 2 = black, 3 = other)
smoke
smoking status during pregnancy (0 = No, 1 = Yes)
ptl
History of premature labour (0 = None, 1 = one, 2 = two, etc.
ht
History of hypertension (0 = No, 1 = Yes)
ui
Presence of Uterine Irritability (0 = No, 1 = Yes)
ftv
Number of Physician Visits during the first trimester ( 0 = none, 1 = one, 2 = two, etc.)
bwt
Birth weight (grams) (response)
Hosmer & Lemeshow, Applied Logistic Regression. pp 25-26.
Hosmer, D.W. & Lemeshow, S.(2000), Applied Logistic Regression (2nd edition), John Wiley & Sons, New York.
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