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Title

Regional Changes in Hormone Therapy Use and Breast Cancer Incidence in California from 2001 to 2004 (Journal of Clinical Oncology)

Publication Topics

2001 CA Health Interview Survey (CHIS 2001); 2003 California Health Interview Survey (CHIS 2003); Screening for Early Disease Detection; Survey Research; Women; Cancer

Publication Type

CHIS Journal Article

Publication Date

2007-06-25T07:00:00Z

Author 1

<a onclick="OpenPopUpPage('http://healthpolicy.ucla.edu/_layouts/listform.aspx?PageType=4&ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}&ID=860&RootFolder=*', RefreshPage); return false;" href="http://healthpolicy.ucla.edu/_layouts/listform.aspx?PageType=4&ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}&ID=860&RootFolder=*">Anthony S. Robbins</a>

Author 2

<a onclick="OpenPopUpPage('http://healthpolicy.ucla.edu/_layouts/listform.aspx?PageType=4&ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}&ID=151&RootFolder=*', RefreshPage); return false;" href="http://healthpolicy.ucla.edu/_layouts/listform.aspx?PageType=4&ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}&ID=151&RootFolder=*">et al</a>

Author 3

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Author 4

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Author 5

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Author 6

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Author 7

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Author 8

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Author 9

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Author 10

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Author 11

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Author 12

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Author 13

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Author 14

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Abstract

Purpose: Recently, an unprecedented 1-year 7% decrease in the overall incidence of invasive female breast cancer in the United States was reported. It has been suggested that the decrease resulted from the mass cessation of estrogen-progestin hormone therapy (EPHT) in 2002. The authors took advantage of California's unique population-based cancer surveillance resources to assess whether regional changes in breast cancer incidence observed between 2001 and 2004 correlated with regional changes in EPHT use between 2001 and 2003.

Methods: They obtained statewide cancer registry and California Health Interview Survey (CHIS) EPHT data for almost 3 million non-Hispanic white women age 45 to 74 years, residing in California's 58 counties. They examined trends in the age-adjusted incidence of invasive female breast cancer and compared these with trends in the use of EPHT, after grouping all California counties into three groups based on EPHT use in 2001. They also examined CHIS data on trends in screening mammography.
 
Results: In 2001, there were large regional differences in EPHT use and breast cancer incidence. From 2001 to 2004, incidence declined by 8.8% in the counties with the smallest EPHT reductions, by 13.9% in those with intermediate reductions, and by 22.6% in counties with the largest EPHT reductions. Between 2001 and 2003, CHIS data did not show any significant change in the proportion of women who reported having a mammogram in the previous 2 years.
 
Conclusion: These data support the hypothesis that changes in EPHT use in 2002 may be responsible for significant declines in breast cancer incidence between 2002 and 2003 and sustained through 2004.

 

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California Health Interview Survey

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Version: 4.0
Created at 8/16/2012 9:24 AM by i:0#.f|uclachissqlmembershipprovider|jonathan
Last modified at 2/13/2013 10:48 AM by i:0#.f|uclachissqlmembershipprovider|jonathan