******************************** * low birth weight * ******************************** * These data come from Appendix 1 of Hosmer and Lemeshow (1989), and were collected at Baystate Medical Center, Springfield MA, during 1986. * Low birth weight is an outcome that has been of concern to physicians for years. This is due to the fact that infant mortality rates and birth defect rates are very high for low birth weight babies. A woman's behavior during pregnancy (including diet, smoking habits, and receiving prenatal care) can greatly alter the chances of carrying the baby to term and, consequently, of delivering a baby of normal birth weight. Table: Code Sheet for the Variables in the Low Birth Weight Data Set. Columns Variable Abbreviation ------------------------------------------------------------------------- 2-4 Identification Code ID 10 Low Birth Weight (0 = Birth Weight ge 2500g, LBW l = Birth Weight < 2500g) 17-18 Age of the Mother in Years AGE 23-25 Weight in Pounds at the Last Menstrual Period LWT 32 Race (1 = White, 2 = Black, 3 = Other) RACE 40 Smoking Status During Pregnancy (1 = Yes, 0 = No) SMOKE 48 History of Premature Labor (0 = None, 1 = One, etc.) PTL 55 History of Hypertension (1 = Yes, 0 = No) HYPER 61 Presence of Uterine Irritability (1 = Yes, 0 = No) URIRR 67 Number of Physician Visits During the First Trimester PVFT (0 = None, 1 = One, 2 = Two, etc.) 73-76 Birth Weight in Grams BWT -------------------------------------------------------------------------