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For mammography, a woman 40 years of age or older must have reported having at least one mammography in her life. Furthermore, she should have had the most recent one within the last two years by the time of interview.
The mammography prevalence questions were asked in BRFSS in 1997, 1998, 1999, 2000, and the even years after 2000 as part of the core questionnaire for all states, and in NHIS in 1998, 1999, 2000, 2003, 2005, 2008, 2010, 2013, 2015, 2018, 2019, 2021, and 2023. The questions were worded in similar ways on the two surveys, except that for the time since most recent mammogram question, NHIS asked for exact year, date or time period while BRFSS only asked for time period.
Available estimates are for the time periods 1997-1999, 2000-2003, 2004-2007, 2008-2010, 2011-2016, 2017-2019, and 2021-2023, and on maps and in data tables by county (except counties in Alaska before 2011), health service area (HSA) and state. The 2017-2019 county estimates are also released in State Cancer Profiles. Click on the map to view data values and confidence intervals for individual regions.
For 2011 to 2023 we added mammography screening for women aged 50-74 to align with the updated U.S. Preventive Services Task Force (USPSTF) recommendations on breast cancer screening.
| Geography Name | GIS Code | Estimated Percent | Lower Confidence Interval | Upper Confidence Interval | County Fips: |
|---|---|---|---|---|---|
| Alabama | 01 | 14 | .001 | 1000 | 12345 |