Mortality data were gathered from California Vital Statistics for more
than 4,000 youth paroled by the California Youth Authority during the
1980s. Exposure periods (time at risk of death), were about 11 years
and 6 years for the two samples. Known deaths for two cohorts totaled
181 for the 3,995 male offenders in the two samples, including 109 for
the 1,998 males in the 1981-1982 sample and 72 for the 1,997 males in
the 1986-1987 sample. Homicide was the prevailing cause for both samp
les. Of particular note is the fact that the numbers of deaths due to
causes other than homicide are roughly proportional to the length of t
he exposure periods for the two samples while the numbers of homicides
are roughly equal despite the very different-lengths of time at risk.
A higher probability of death by murder was observed for Black youth,
those from Los Angeles, those with a history of gang involvement and
institutional violence, and those with a history of drug arrests.