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Cancer Epidemiol. 2010 Apr;34(2):168-77. doi: 10.1016/j.canep.2010.02.005. Epub 2010 Mar 19.

Prevalence and correlates of recent and repeat mammography among California women ages 55-79.

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  • 1Department of Community Health, Program in Public Health, 121 South Main Street, 2nd floor, Brown University, Providence, RI 02912, USA.



Data on repeat mammography rates are less available than for recent screening. Two large, population-based state surveys provide the opportunity to investigate repeat and recent mammography prevalence and correlates among California's diverse population.


Data were from women aged 55-79, using the 2001 and 2005 California Health Interview Surveys. The study assessed the prevalence and correlates of recent mammography (within the past two years) and repeat mammography (mammogram within the past two years and 3-11 mammograms within the past six years).


Prevalence was 82.4% (recent) and 73.8% (repeat) in 2001, and 87.1% (recent) and 77.5% (repeat) in 2005. Correlates of lower rates were insurance status, no usual source of care, being a smoker, age 65-79, being Asian with no English proficiency, being never married, and lower absolute risk for breast cancer. Especially low ratios of repeat-to-recent mammography existed for the uninsured, and those using the emergency room or with no source of care. Unexpected findings in which unadjusted results were inconsistent with multivariable adjusted results occurred for Latinas with no English proficiency and women at 200-299% of poverty level.


Several groups of women in California remain at-risk of lower mammography utilization. However, investigators should also be alert for instances where multivariable analyses seem particularly discrepant with crude rates.

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