State Cancer Profiles

Interpretation of Historical Trends Data

Historical Trends (2002-2020)

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

Line graph with 19 years and 1 segments
During 2002-2020, the APC¹ in the rate of cancer was stable: -0.7 with a 95% confidence interval from -1.6 to 0.4.
Yearly points:
In 2002, the observed rate was 539.0. The estimated rate was 654.3.
In 2003, the observed rate was 661.5. The estimated rate was 649.7.
In 2004, the observed rate was 622.0. The estimated rate was 645.1.
In 2005, the observed rate was 641.5. The estimated rate was 640.5.
In 2006, the observed rate was 647.7. The estimated rate was 636.0.
In 2007, the observed rate was 736.6. The estimated rate was 631.5.
In 2008, the observed rate was 616.0. The estimated rate was 627.0.
In 2009, the observed rate was 682.2. The estimated rate was 622.6.
In 2010, the observed rate was 695.2. The estimated rate was 618.2.
In 2011, the observed rate was 651.7. The estimated rate was 613.8.
In 2012, the observed rate was 513.4. The estimated rate was 609.5.
In 2013, the observed rate was 563.6. The estimated rate was 605.2.
In 2014, the observed rate was 556.8. The estimated rate was 600.9.
In 2015, the observed rate was 570.3. The estimated rate was 596.6.
In 2016, the observed rate was 561.5. The estimated rate was 592.4.
In 2017, the observed rate was 631.6. The estimated rate was 588.2.
In 2018, the observed rate was 598.1. The estimated rate was 584.1.
In 2019, the observed rate was 578.3. The estimated rate was 579.9.
In 2020, the observed rate was 578.8. The estimated rate was 0.0.

Notes:

Created by statecancerprofiles.cancer.gov on 05/03/2024 3:54 pm.
Regression lines calculated using the Joinpoint Regression Program (Version 4.8.0.0).
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.
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.