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duration
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Duration of breast feeding, weeks
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delta
-
Indicator of completed breast feeding (1=yes, 0=no)
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race
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Race of mother (1=white, 2=black, 3=other)
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poverty
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Mother in poverty (1=yes, 0=no)
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smoke
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Mother smoked at birth of child (1=yes, 0=no)
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alcohol
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Mother used alcohol at birth of child (1=yes, 0=no)
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agemth
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Age of mother at birth of child
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ybirth
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Year of birth
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yschool
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Education level of mother (years of school)
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pc3mth
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Prenatal care after 3rd month (1=yes, 0=no)