Identification code
Birthweight<2500g
Age of mother
Weight at last menstrual period
Race
Smoked during pregnancy
Premature labor history (count)
Has history of hypertension
Presence, uterine irritability
Number of visits to physician during 1st trimester
Birthweight (grams)
Race==white
Race==black
Race==other
History of premature labor
Maternal wgt before pregnancy; 1 if < 110 lbs., 0 otherwise