Objectives. Breast cancer mortality may be reduced if the disease is d
etected early through targeted screening programs. Current screening g
uidelines are based solely on a woman's age. Because working populatio
ns are accessible for intervention, occupational identification may be
a way of helping to define and locate risk groups and target preventi
on. Methods. We used a database consisting of 2.9 million occupational
ly coded death certificates collected from 23 states between 1979 and
1987 to calculate age-adjusted, race-specific proportionate mortality
ratios for breast cancer according to occupation. We performed case-co
ntrol analyses on occupational groups and on stratifications within th
e teaching profession. Results. We found a number of significant assoc
iations between occupation and frequency of breast cancer. For example
, white female professional, managerial, and clerical workers all had
high proportions of breast cancer death. High rates of breast cancer i
n teachers were found in both proportionate mortality ratio and case-c
ontrol analyses. Conclusions. These findings may serve as in an aid in
the effective targeting of work-site health promotion programs. They
suggest that occupationally coded mortality data can be a useful adjun
ct in the difficult task of identifying groups at risk of preventable
disease.