male.mortality: Male mortality in ages 40-60, nineteenth century
Description
Males born in the years 1800-1820 and surving at least 40 years in
the parish Skellefteå in northern
Sweden are followed from their fortieth birthday until death or the
sixtieth birthday, whichever comes first.
Usage
data(male.mortality)
Arguments
Format
A data frame with 2058 observations on the following 6 variables.
id
Personal identification number.
enter
Start of duration. Measured in years since the
fortieth birthday.
exit
End of duration. Measured in years since the
fortieth birthday.
event
a logical vector indicating death at end of interval.
birthdate
The birthdate in decimal form.
ses
Socio-economic status, a factor with levels
lower, upper
Details
The interesting explanatory
covariate is ses (socioeconomic status), which is a
time-varying covariate. This explains why several individuals are
representated by more than one record each. Left trucation and right
censoring are introduced this way.