A dataset from the MASS package containing risk factors associated with low birth weight (LBW) in newborns. Originally collected at Baystate Medical Center, Springfield, Massachusetts, USA.
Format
A data frame with 189 observations and 10 variables:
- low
Indicator for birth weight < 2500g (binary):
0 = normal,1 = low birth weight- age
Mother's age in years (numeric)
- lwt
Mother's weight in pounds at last menstrual period (numeric)
- race
Mother's race (factor):
1 = White,2 = Black,3 = Other- smoke
Smoking status during pregnancy (binary):
0 = No,1 = Yes- ptl
Number of previous premature labors (integer)
- ht
History of hypertension (binary):
0 = No,1 = Yes- ui
Presence of uterine irritability (binary):
0 = No,1 = Yes- ftv
no of physician visits during the 1st trimester (integer, 0–6)
- bwt
Birth weight in grams (numeric)