Data collected for a multicenter case-control study of invasive cervic
al cancer and carcinoma in situ of the cervix were analyzed with regar
d to occupation. Odds ratios comparing 481 invasive cases and 293 carc
inoma in situ cases to 801 controls were calculated and adjusted for p
otential confounding factors. Working women and homemakers had a simil
ar risk of invasive cervical cancer, with several groups of service an
d industrial workers showing elevated risks (particularly maids, clean
ers, and cooks). Risk of carcinoma in situ was slightly increased for
working women, but no occupational groups had notable associations. Th
e principal strengths of this analysis were the ability to address bot
h invasive cervical cancer and carcinoma in situ and to control for mu
ltiple potential confounding factors. However, occupational informatio
n was limited and risk estimates for women in specific occupations wer
e imprecise.