Matched Low Birth Weight data
A data.frame with
\(112\) observations (rows)
and \(9\) variables (columns).
This data was collected as part of a larger study at Bayside Medical Center, Springfield, Massachusetts. It contains information on 56 cases (of low birth weight deliveries) and an equal number of age-matched controls.
The observed variable values were modified to protect patient confidentiality.
A one-to-one matched set was created from the low birth weight data. For each woman who gave birth to a low birth weight baby, a mother of the same age was randomly selected who did not give birth to a low birth weight baby. For three mothers aged \(< 17\), it was not possible to identify a match.
Columns are:
Identification code.
Low birth weight? (factor):
BWT > 2500g
BWT <= 2500g
Age of mother.
Weight of mother (lbs) at last menstrual period.
Race (factor):
white
black
other
Smoking status during pregnancy
(factor):
no
yes
Pre-term delivery previously?
(factor):
no
yes
History of hypertension
(factor):
no
yes
History of uterine irritability
(factor):
no
yes
H&L 2nd ed. Page 230. Section 7.3.