State Cancer Profiles

Interpretation of Historical Trends Data

Historical Trends (2002-2021)

Incidence, Washington, All Cancer Sites, AI/AN Non-Hispanic, All Ages, Both Sexes

Line graph with 20 years and 3 segments
During 2002-2011, the APC¹ in the rate of cancer was stable: 0.3 with a 95% confidence interval from -0.6 to 6.7.
During 2011-2014, the APC¹ in the rate of cancer was falling: -4.3 with a 95% confidence interval from -6.6 to -0.8.
During 2014-2021, the APC¹ in the rate of cancer was rising: 1.7 with a 95% confidence interval from 0.1 to 5.0.
Yearly points:
In 2002, the observed rate was 590.2. The estimated rate was 568.6.
In 2003, the observed rate was 570.8. The estimated rate was 570.2.
In 2004, the observed rate was 581.6. The estimated rate was 571.9.
In 2005, the observed rate was 539.5. The estimated rate was 573.6.
In 2006, the observed rate was 586.9. The estimated rate was 575.3.
In 2007, the observed rate was 548.2. The estimated rate was 577.0.
In 2008, the observed rate was 564.7. The estimated rate was 578.7.
In 2009, the observed rate was 602.7. The estimated rate was 580.4.
In 2010, the observed rate was 599.4. The estimated rate was 582.2.
In 2011, the observed rate was 571.2. The estimated rate was 583.9.
In 2012, the observed rate was 572.6. The estimated rate was 558.6.
In 2013, the observed rate was 523.4. The estimated rate was 534.4.
In 2014, the observed rate was 514.1. The estimated rate was 511.2.
In 2015, the observed rate was 537.0. The estimated rate was 520.1.
In 2016, the observed rate was 524.8. The estimated rate was 529.1.
In 2017, the observed rate was 530.9. The estimated rate was 538.3.
In 2018, the observed rate was 548.0. The estimated rate was 547.6.
In 2019, the observed rate was 534.0. The estimated rate was 557.1.
In 2020, the observed rate was 512.0. The estimated rate was N/A.
In 2021, the observed rate was 592.8. The estimated rate was 576.6.

Notes:

Created by statecancerprofiles.cancer.gov on 07/18/2025 7:35 pm.
Regression lines calculated using the Joinpoint Regression Program (Version 5.3.0).
¹ The APC is the Annual Percent Change over the time interval. Rates used in the calculation of the APC are age-adjusted to the 2000 US standard population (19 age groups: <1, 1-4, 5-9, ... , 80-84, 85+).

Explanation of the Calculation of the Trend:
If the APC is less than -1.5, the trend is falling.
If the APC is between -1.5 and -0.5, the trend is slightly falling.
If the APC is between -0.5 and 0.5, the trend is statistically stable.
If the APC is between 0.5 and 1.5, the trend is slightly rising.
If the APC is greater than 1.5, the trend is rising.

The 2020 incidence rate is displayed but not used in the fit of the trend line(s). Impact of COVID on SEER Cancer Incidence 2020 data.
Statistics for minorities may be affected by inconsistent race identification between the cancer case reports (sources for numerator of rate) and data from the Census Bureau (source for denominator of rate); and from undercounts of some population groups in the census.

Source: Incidence data provided by the SEER Program and the National Program of Cancer Registries SEER*Stat Database United States Department of Health and Human Services, Centers for Disease Control and Prevention. Rates calculated by the National Cancer Institute using SEER*Stat. Rates 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. Population counts for denominators are based on Census populations as modified by NCI. The US populations included with the data release have been adjusted for the population shifts due to hurricanes Katrina and Rita for 62 counties and parishes in Alabama, Mississippi, Louisiana, and Texas. The US Population Data File is used with SEER data. Rates and trends in this graph are computed using the same standard for malignancy. For more information see malignant.html

Source: Death data provided by the National Vital Statistics System public use data file. Death rates calculated by the National Cancer Institute using SEER*Stat. Death rates (deaths 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+). Population counts for denominators are based on Census populations as modified by NCI. The US populations included with the data release have been adjusted for the population shifts due to hurricanes Katrina and Rita for 62 counties and parishes in Alabama, Mississippi, Louisiana, and Texas. US Population Data File is used with mortality data.

Due to data availability issues, the time period used in the calculation of the joinpoint regression model may differ for selected racial groups or counties.