data from Section 1.14

Description

The bfeed data frame has 927 rows and 10 columns.

Format

This data frame contains the following columns:

duration

Duration of breast feeding, weeks

delta

Indicator of completed breast feeding (1=yes, 0=no)

race

Race of mother (1=white, 2=black, 3=other)

poverty

Mother in poverty (1=yes, 0=no)

smoke

Mother smoked at birth of child (1=yes, 0=no)

alcohol

Mother used alcohol at birth of child (1=yes, 0=no)

agemth

Age of mother at birth of child

ybirth

Year of birth

yschool

Education level of mother (years of school)

pc3mth

Prenatal care after 3rd month (1=yes, 0=no)

Source

Klein and Moeschberger (1997) Survival Analysis Techniques for Censored and truncated data, Springer. National Longitudinal Survey of Youth Handbook The Ohio State University, 1995.

Examples

data(bfeed)