Researchers collected historical and current data on umpires to
investigate their life expectancies following the collapse and death
of a U.S. major league baseball umpire. They were investigating
speculation that stress associated with the job posed a health
risk. Data were found on 227 umpires who had died or had retired and
were still living. The data set includes the dates of birth and death.
Usage
ex0321
Arguments
Format
A data frame with 227 observations on the following 3 variables.
Lifelength
observed lifetime for those umpires who had
died by the time of the study or current age of those still
living
Censored
0 for those who had died by the time of the
study or 1 for those who were still living
Expected
length from actuarial life tables for
individuals who were alive at the time the person first became an
umpire
References
Cohen, R.S., Kamps, C.A., Kokoska, S., Segal E.M. and Tucker,
J.B.(2000). Life Expectancy of Major League Baseball Umpires,
The Physician and Sportsmedicine28(5): 83--89.