Bay Area breast cancer rates decline
By Lara Moscrip, Bay City News Service
October 11, 2006
A nonprofit cancer research center reported a decline in the
occurrences of breast cancer among women of all ethnic backgrounds
in the Bay Area since 2000, according to its annual report released
Authors of the Northern California Cancer Center's Cancer Incidence
and Mortality Report has monitored breast cancer incidence rates
among women of the nine Bay Area counties from 1988 to 2003, reporting
Deaths from the disease have declined steadily since 1988, according
to the report. Marin County had the highest rate of breast cancer
occurrence among white women but the rate has decreased from previous
years, according to the center's report.
White women living in Marin County had a breast cancer incidence
rate of 167 per 100,000 women from the 1999 to 2003 period. The
average breast cancer incidence rate for white women Bay Area-wide
was 158 per 100,000, according to the report.
The study reported that for black women living in the Bay Area,
the average breast cancer incidence rate was 118 per 100,000 women.
According to the study, Hispanic women reported a lower average
breast cancer incidence rate for the same 1999 to 2003 period,
with an average of 107 incidences per 100,000 women.
The average breast cancer incidence rate for Asian and Pacific
Islander women in the Bay Area was reported as 88 per 100,000
women during the same time period.
Scientists at the Northern California Cancer center suggest that
the declines in breast cancer diagnoses in Northern California
may be due to the declining use of hormone replacement therapies.
Results of the study will be published in an upcoming issue of
the Journal of Clinical Oncology.
Breast cancer remains the most frequently occurring cancer in
women in the greater Bay Area, according to the center.
According to the Northern California Cancer Center, 66,491 new
cases of breast cancer were diagnosed between 1988 and 2003.
The study included data from women living in Alameda, Contra
Costa, Marin, San Francisco, San Mateo, Santa Clara, Monterey,
San Benito and Santa Cruz Counties.
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