State Cancer Profiles

Interpretation of Historical Trends Data

Historical Trends (2002-2021)

Incidence, Montana, Prostate, All Races (incl Hisp), All Ages, Male

Line graph with 20 years and 4 segments
During 2002-2007, the APC¹ in the rate of cancer was stable: -2.7 with a 95% confidence interval from -4.5 to 2.4.
During 2007-2014, the APC¹ in the rate of cancer was falling: -6.7 with a 95% confidence interval from -11.1 to -5.6.
During 2014-2017, the APC¹ in the rate of cancer was rising: 10.3 with a 95% confidence interval from 5.2 to 14.0.
During 2017-2021, the APC¹ in the rate of cancer was falling: -2.5 with a 95% confidence interval from -6.6 to -0.2.
Yearly points:
In 2002, the observed rate was 203.7. The estimated rate was 196.9.
In 2003, the observed rate was 187.5. The estimated rate was 191.6.
In 2004, the observed rate was 185.7. The estimated rate was 186.4.
In 2005, the observed rate was 173.2. The estimated rate was 181.4.
In 2006, the observed rate was 177.7. The estimated rate was 176.5.
In 2007, the observed rate was 178.6. The estimated rate was 171.7.
In 2008, the observed rate was 147.1. The estimated rate was 160.2.
In 2009, the observed rate was 158.3. The estimated rate was 149.4.
In 2010, the observed rate was 142.0. The estimated rate was 139.3.
In 2011, the observed rate was 137.5. The estimated rate was 129.9.
In 2012, the observed rate was 108.3. The estimated rate was 121.1.
In 2013, the observed rate was 113.3. The estimated rate was 113.0.
In 2014, the observed rate was 104.4. The estimated rate was 105.4.
In 2015, the observed rate was 119.2. The estimated rate was 116.2.
In 2016, the observed rate was 130.4. The estimated rate was 128.3.
In 2017, the observed rate was 137.4. The estimated rate was 141.5.
In 2018, the observed rate was 139.2. The estimated rate was 138.0.
In 2019, the observed rate was 136.1. The estimated rate was 134.6.
In 2020, the observed rate was 118.2. The estimated rate was N/A.
In 2021, the observed rate was 126.9. The estimated rate was 128.0.

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.
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.