State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Puerto Rico

Breast (in situ) (All Stages^), 2017-2021

All Races (includes Hispanic), Female, All Ages

Sorted by Rate

Explanation of Column Headers

Objective - The objective of *** is from the Healthy People 2020 project done by the Centers for Disease Control and Prevention.

Incidence Rate (95% Confidence Interval) - The incidence rate is based upon 100,000 people and is an annual rate (or average annual rate) based on the time period indicated. Rates are age-adjusted by 5-year age groups to the 2000 U.S. standard million population.

Recent Trends - This is an interpretation of the AAPC/APC:

• Rising when 95% confidence interval of AAPC/APC is above 0.
• Stable when 95% confidence interval of AAPC/APC includes 0.
• Falling when 95% confidence interval of AAPC/APC is below 0.

AAPC/APC (95% Confidence Interval) - the change in rate over time

• Average Annual Percent Change - AAPCs are based upon APCs that were calculated by Joinpoint Regression Program
• Annual Percent Change - APCs calculated in SEER*Stat.

Other Notes

• Larger confidence intervals indicate less stability of the data. This is often due to low counts that are not quite low enough to be suppressed.
• Data is currently being suppressed if there are fewer than 16 counts for the time period.

Line by Line Interpretation of the Report

Puerto Rico⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 19.7 with a 95% confidence interval from 18.8 to 20.7 and 413 average annual cases over 2017-2021.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is rising because the trend is 2.3 with a 95% confidence interval from 1.1 to 3.6.

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 29.3 with a 95% confidence interval from 29.2 to 29.4 and 57,211 average annual cases over 2017-2021.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is stable because the trend is 1.5 with a 95% confidence interval from -1.1 to 3.7.

Notes:
Created by statecancerprofiles.cancer.gov on 07/02/2025 12:41 am.

State Cancer Registries may provide more current or more local data.
† Incidence rates (cases per 100,000 population per year) are age-adjusted to the 2000 US standard population (19 age groups: <1, 1-4, 5-9, ... , 80-84, 85+). Rates are for invasive cancer only (except for bladder cancer which is invasive and in situ) or unless otherwise specified. Rates calculated using SEER*Stat. Population counts for denominators are based on Census populations as modified by NCI. The US Population Data File is used for SEER and NPCR incidence rates.
Rates and trends are computed using different standards for malignancy. For more information see malignant.html.

^ All Stages refers to any stage in the Surveillance, Epidemiology, and End Results (SEER) Summary/Historic Combined Summary Stage (2004+).
Φ Rural-Urban Continuum Codes provided by the USDA.
Puerto Rico is treated as urban because over 90% of the population lives in urban areas.
Source: SEER and NPCR data. For more specific information please see the table.

Data for the United States does not include data from Indiana.
Data for the United States does not include Puerto Rico.