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1.4.1 Birth Weight Data Set

The Birth Weight data set consists of data collected on 189 women to identify the risk factors associated with the birth of a low birth weight baby. The data set was collected at the Baystate Medical Center in Springfield, Massachusetts. The variables included in this data set are summarized in Table 1.1.

Table 1.1 A Description of the Variables in the Birth Weight Data Set

Variable	Description	Codes/Values	Name
1	Identification code	ID number	ID
2	Low birth weight	1 = BWT≤2500 g	LOW
		0 = BWT>2500 g
3	Age of mother	Years	AGE
4	Weight of mother at	Pounds	LWT
	last menstrual period
5	Race	1 = White	RACE
		2 = Black
		3 = Other
6	Smoking status during pregnancy	0 = No	SMOKE
		1 = Yes
7	History of premature labor	0 = None	PTL
		1 = One
		2 = Two, etc.
8	History of hypertension	0 = No	HT
		1 = Yes
9	Presence of uterine irritability	0 = No	UI
		1 = Yes
10	Number of physician visits	0 = None	FTV
	during the first trimester	1 = One
		2 = Two, etc.
11	Birth weight	Grams	BWT

Applied Biostatistics for the Health Sciences

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