Incidence of Breast Cancer by County, Females Under 50 Years of Age, New Mexico, 2016-2020
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Incidence of Breast Cancer by County, Females Under 50 Years of Age, New Mexico, 2016-2020
Why Is This Important?
Breast cancer is the most common cancer diagnosed in women. It is estimated that one in eight women will develop breast cancer sometime during her life. Breast cancer can occur at any age, but most cases occur in women over age 50. Breast cancer accounts for nearly 15% of newly diagnosed cancers in the U.S. each year and about 7% of annual cancer deaths. This equates to 287,850 cases and over 43,000 deaths. The five-year survival rate is 90.6%. Like other forms of cancer, breast cancer is caused by a combination of several environmental and heredity risk factors. Screening mammography can help detect breast cancer at an early stage when treatment is most effective.
Definition
Breast cancer incidence refers to the number of females newly diagnosed with breast cancer within a specified time period and age group. Measures include 1) the number of newly diagnosed breast cancer cases in women under age 50 years, and 50 years and older; and 2) age-adjusted breast cancer incidence rate in women under age 50 years, and 50 years and older (adjusted by the direct method to the 2000 US standard population). All rates are expressed per 100,000 persons.
Data Notes
Rates have been age-adjusted using the direct method and the 2000 U.S. standard population.Data Sources
- New Mexico Population Estimates: University of New Mexico, Geospatial and Population Studies (GPS) Program.
(http://gps.unm.edu/) - New Mexico Tumor Registry
(https://nmtrweb.unm.edu/)
How the Measure is Calculated
Numerator:
The number of breast cancer cases newly diagnosed in New Mexico female residents within a specified time period and age group. The data are based on the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) program incidence site recode: 26000. http://seer.cancer.gov/siterecode/.Denominator:
The estimated population of New Mexico female residents within a specified time period and age group.
Data Issues
New Mexico Population Estimates
All population estimates apply to July 1 of the selected year. These estimates are considered the most accurate estimates for the state of New Mexico and should match those found on the University of New Mexico Geospatial and Population Studies website. Estimates include decimal fractions. Census tract population estimates were summed to produce County and Small Area population estimates. Population estimate totals may vary due to rounding. Population estimates for previous years are occasionally revised as new information becomes available. When publishing trend data, always be sure that your rates for earlier years match current rates on NM-IBIS that have been calculated with the most up-to-date population estimates.
New Mexico Tumor Registry
In agreement with the New Mexico Tumor Registry, to ensure confidentiality the count of cancer cases is suppressed for any given county if the count is between one and four and the population is less than 1,000. NOTE: The COVID-19 pandemic disrupted health services, leading to delays and reductions in cancer screening, diagnosis, and reporting to some central cancer registries. This may have contributed to an observed decline in 2020 incidence for most cancer sites.