## Interpretation of Incidence Rates Data

### Incidence Rate Report for Montana by County

All Races (includes Hispanic), Both Sexes, All Cancer Sites, All Ages

Sorted by Rate

**Explanation of Column Headers**

**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**

**Line by Line Interpretation of the Report**

#### Montana^{6,10}

- Rate : The incidence rate is 450.8 with a 95% confidence interval from 445.3 to 456.4 and 5,402 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -1.6 with a 95% confidence interval from -4.5 to 1.5.

#### US (SEER+NPCR)^{1,10}

- Rate : The incidence rate is 453.8 with a 95% confidence interval from 453.5 to 454.1 and 1,526,274 § average annual cases over 2008-2012.
- Recent Trend : The trend is falling because the trend is -2.1 with a 95% confidence interval from -2.9 to -1.2.

#### Musselshell County^{6,10}

- Rate : The incidence rate is 587.0 with a 95% confidence interval from 501.9 to 684.1 and 39 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -6.5 with a 95% confidence interval from -13.7 to 1.2.

#### Meagher County^{6,10}

- Rate : The incidence rate is 573.8 with a 95% confidence interval from 450.8 to 725.4 and 18 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 8.3 with a 95% confidence interval from -12.1 to 33.4.

#### Mineral County^{6,10}

- Rate : The incidence rate is 538.8 with a 95% confidence interval from 454.3 to 636.6 and 35 average annual cases over 2008-2012.
- Recent Trend : The trend is rising because the trend is 8.6 with a 95% confidence interval from 2.7 to 14.8.

#### Golden Valley County^{6,10}

- Rate : The incidence rate is 524.5 with a 95% confidence interval from 363.4 to 752.9 and 7 average annual cases over 2008-2012.
- Recent Trend : * Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 cases were reported in a specific area-sex-race category. If an average count of 3 is shown, the total number of cases for the time period is 16 or more which exceeds suppression threshold (but is rounded to 3).

#### Stillwater County^{6,10}

- Rate : The incidence rate is 519.3 with a 95% confidence interval from 461.5 to 583.1 and 64 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -1.4 with a 95% confidence interval from -4.7 to 2.0.

#### Flathead County^{6,10}

- Rate : The incidence rate is 516.8 with a 95% confidence interval from 497.4 to 536.7 and 570 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 2.7 with a 95% confidence interval from -1.7 to 7.3.

#### Fallon County^{6,10}

- Rate : The incidence rate is 511.4 with a 95% confidence interval from 413.1 to 627.9 and 20 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -9.7 with a 95% confidence interval from -23.3 to 6.2.

#### Roosevelt County^{6,10}

- Rate : The incidence rate is 509.5 with a 95% confidence interval from 448.4 to 576.5 and 53 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -3.0 with a 95% confidence interval from -16.2 to 12.3.

#### Judith Basin County^{6,10}

- Rate : The incidence rate is 507.5 with a 95% confidence interval from 398.0 to 643.3 and 16 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -7.5 with a 95% confidence interval from -29.7 to 21.9.

#### Petroleum County^{6,10}

- Rate : The incidence rate is 504.9 with a 95% confidence interval from 299.2 to 833.5 and 4 average annual cases over 2008-2012.
- Recent Trend : * Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 cases were reported in a specific area-sex-race category. If an average count of 3 is shown, the total number of cases for the time period is 16 or more which exceeds suppression threshold (but is rounded to 3).

#### Dawson County^{6,10}

- Rate : The incidence rate is 494.3 with a 95% confidence interval from 438.6 to 555.7 and 61 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 0.2 with a 95% confidence interval from -13.1 to 15.4.

#### Powder River County^{6,10}

- Rate : The incidence rate is 491.0 with a 95% confidence interval from 371.7 to 644.4 and 14 average annual cases over 2008-2012.
- Recent Trend : * Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 cases were reported in a specific area-sex-race category. If an average count of 3 is shown, the total number of cases for the time period is 16 or more which exceeds suppression threshold (but is rounded to 3).

#### Rosebud County^{6,10}

- Rate : The incidence rate is 490.7 with a 95% confidence interval from 426.9 to 561.3 and 46 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 1.5 with a 95% confidence interval from -10.5 to 15.1.

#### Hill County^{6,10}

- Rate : The incidence rate is 485.1 with a 95% confidence interval from 438.8 to 535.0 and 84 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.8 with a 95% confidence interval from -12.0 to 7.3.

#### Custer County^{6,10}

- Rate : The incidence rate is 485.0 with a 95% confidence interval from 435.6 to 538.7 and 76 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 2.0 with a 95% confidence interval from -11.5 to 17.6.

#### Blaine County^{6,10}

- Rate : The incidence rate is 484.6 with a 95% confidence interval from 414.6 to 563.2 and 36 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -6.5 with a 95% confidence interval from -24.0 to 15.0.

#### Prairie County^{6,10}

- Rate : The incidence rate is 482.4 with a 95% confidence interval from 342.3 to 673.1 and 10 average annual cases over 2008-2012.

#### Glacier County^{6,10}

- Rate : The incidence rate is 477.0 with a 95% confidence interval from 422.9 to 535.9 and 59 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 6.1 with a 95% confidence interval from -14.9 to 32.3.

#### Yellowstone County^{6,10}

- Rate : The incidence rate is 475.8 with a 95% confidence interval from 461.0 to 491.0 and 812 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.8 with a 95% confidence interval from -8.8 to 3.5.

#### Toole County^{6,10}

- Rate : The incidence rate is 475.5 with a 95% confidence interval from 400.0 to 561.8 and 30 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 3.8 with a 95% confidence interval from -17.2 to 30.2.

#### Sweet Grass County^{6,10}

- Rate : The incidence rate is 473.1 with a 95% confidence interval from 388.7 to 572.5 and 25 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -3.1 with a 95% confidence interval from -15.7 to 11.3.

#### Treasure County^{6,10}

- Rate : The incidence rate is 471.2 with a 95% confidence interval from 305.5 to 719.4 and 6 average annual cases over 2008-2012.

#### Powell County^{6,10}

- Rate : The incidence rate is 462.0 with a 95% confidence interval from 400.9 to 530.7 and 43 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -9.6 with a 95% confidence interval from -25.8 to 10.0.

#### Fergus County^{6,10}

- Rate : The incidence rate is 460.8 with a 95% confidence interval from 415.9 to 509.8 and 85 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -6.5 with a 95% confidence interval from -15.6 to 3.6.

#### Lincoln County^{6,10}

- Rate : The incidence rate is 460.7 with a 95% confidence interval from 425.0 to 499.1 and 141 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.1 with a 95% confidence interval from -12.9 to 10.0.

#### Park County^{6,10}

- Rate : The incidence rate is 459.2 with a 95% confidence interval from 418.0 to 503.9 and 98 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.3 with a 95% confidence interval from -14.4 to 11.5.

#### Phillips County^{6,10}

- Rate : The incidence rate is 456.8 with a 95% confidence interval from 381.6 to 544.4 and 29 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -1.8 with a 95% confidence interval from -12.2 to 9.9.

#### Cascade County^{6,10}

- Rate : The incidence rate is 453.7 with a 95% confidence interval from 434.7 to 473.3 and 446 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.7 with a 95% confidence interval from -10.2 to 5.5.

#### Teton County^{6,10}

- Rate : The incidence rate is 447.8 with a 95% confidence interval from 387.3 to 516.5 and 42 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.5 with a 95% confidence interval from -15.7 to 12.9.

#### Silver Bow County^{6,10}

- Rate : The incidence rate is 445.5 with a 95% confidence interval from 417.2 to 475.4 and 193 average annual cases over 2008-2012.
- Recent Trend : The trend is falling because the trend is -4.2 with a 95% confidence interval from -7.0 to -1.2.

#### Jefferson County^{6,10}

- Rate : The incidence rate is 445.4 with a 95% confidence interval from 394.1 to 501.9 and 65 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -4.6 with a 95% confidence interval from -21.5 to 15.9.

#### Daniels County^{6,10}

- Rate : The incidence rate is 444.0 with a 95% confidence interval from 333.6 to 585.7 and 13 average annual cases over 2008-2012.

#### Sanders County^{6,10}

- Rate : The incidence rate is 439.6 with a 95% confidence interval from 394.5 to 489.3 and 82 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 3.5 with a 95% confidence interval from -7.7 to 16.1.

#### Richland County^{6,10}

- Rate : The incidence rate is 435.5 with a 95% confidence interval from 383.4 to 493.1 and 53 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.5 with a 95% confidence interval from -23.0 to 23.3.

#### Lake County^{6,10}

- Rate : The incidence rate is 431.5 with a 95% confidence interval from 401.1 to 463.7 and 161 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -6.2 with a 95% confidence interval from -17.8 to 7.0.

#### Lewis and Clark County^{6,10}

- Rate : The incidence rate is 430.2 with a 95% confidence interval from 408.7 to 452.5 and 325 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -2.8 with a 95% confidence interval from -8.9 to 3.7.

#### Deer Lodge County^{6,10}

- Rate : The incidence rate is 426.1 with a 95% confidence interval from 376.1 to 481.7 and 57 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 5.8 with a 95% confidence interval from -5.2 to 17.9.

#### Pondera County^{6,10}

- Rate : The incidence rate is 424.8 with a 95% confidence interval from 361.9 to 496.2 and 36 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -7.5 with a 95% confidence interval from -19.0 to 5.6.

#### Valley County^{6,10}

- Rate : The incidence rate is 424.0 with a 95% confidence interval from 368.3 to 486.8 and 46 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 8.6 with a 95% confidence interval from -7.9 to 27.9.

#### Big Horn County^{6,10}

- Rate : The incidence rate is 422.9 with a 95% confidence interval from 370.5 to 480.5 and 50 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -0.5 with a 95% confidence interval from -26.8 to 35.4.

#### Chouteau County^{6,10}

- Rate : The incidence rate is 421.9 with a 95% confidence interval from 357.1 to 496.0 and 33 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -1.6 with a 95% confidence interval from -17.4 to 17.3.

#### Beaverhead County^{6,10}

- Rate : The incidence rate is 420.2 with a 95% confidence interval from 367.2 to 479.3 and 50 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -7.7 with a 95% confidence interval from -22.2 to 9.6.

#### Missoula County^{6,10}

- Rate : The incidence rate is 420.1 with a 95% confidence interval from 402.6 to 438.1 and 463 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -0.1 with a 95% confidence interval from -9.9 to 10.8.

#### Gallatin County^{6,10}

- Rate : The incidence rate is 416.6 with a 95% confidence interval from 396.3 to 437.7 and 337 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -3.6 with a 95% confidence interval from -13.3 to 7.2.

#### Carbon County^{6,10}

- Rate : The incidence rate is 411.7 with a 95% confidence interval from 365.1 to 463.4 and 62 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 2.4 with a 95% confidence interval from -3.3 to 8.3.

#### Ravalli County^{6,10}

- Rate : The incidence rate is 404.2 with a 95% confidence interval from 380.4 to 429.2 and 238 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -0.7 with a 95% confidence interval from -3.4 to 2.2.

#### Sheridan County^{6,10}

- Rate : The incidence rate is 403.1 with a 95% confidence interval from 327.8 to 493.7 and 24 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 5.8 with a 95% confidence interval from -7.7 to 21.3.

#### Wheatland County^{6,10}

- Rate : The incidence rate is 382.0 with a 95% confidence interval from 291.9 to 495.7 and 13 average annual cases over 2008-2012.

#### Madison County^{6,10}

- Rate : The incidence rate is 378.7 with a 95% confidence interval from 327.9 to 436.3 and 46 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is -6.0 with a 95% confidence interval from -26.8 to 20.7.

#### Wibaux County^{6,10}

- Rate : The incidence rate is 373.3 with a 95% confidence interval from 250.3 to 550.2 and 6 average annual cases over 2008-2012.

#### Liberty County^{6,10}

- Rate : The incidence rate is 371.2 with a 95% confidence interval from 282.7 to 482.0 and 12 average annual cases over 2008-2012.

#### Broadwater County^{6,10}

- Rate : The incidence rate is 358.7 with a 95% confidence interval from 298.8 to 428.3 and 27 average annual cases over 2008-2012.
- Recent Trend : The trend is stable because the trend is 7.0 with a 95% confidence interval from -7.8 to 24.0.

#### McCone County^{6,10}

- Rate : The incidence rate is 349.8 with a 95% confidence interval from 242.4 to 492.9 and 9 average annual cases over 2008-2012.

#### Granite County^{6,10}

- Rate : The incidence rate is 348.1 with a 95% confidence interval from 272.1 to 443.3 and 19 average annual cases over 2008-2012.
- Recent Trend : The trend is rising because the trend is 15.6 with a 95% confidence interval from 2.2 to 30.9.

#### Garfield County^{6,10}

- Rate : The incidence rate is 315.5 with a 95% confidence interval from 204.4 to 472.5 and 6 average annual cases over 2008-2012.

#### Carter County^{6,10}

- Rate : The incidence rate is 210.9 with a 95% confidence interval from 125.3 to 348.1 and 4 average annual cases over 2008-2012.

**Notes:**

Created by statecancerprofiles.cancer.gov on 02/07/2016 10:03 am.

Data for the United States does not include data from Nevada.

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 1969-2013 US Population Data File is used for SEER and NPCR incidence rates.

‡ Incidence data come from different sources. Due to different years of data availability, most of the trends are AAPCs based on APCs but some are APCs calculated in SEER*Stat. Please refer to the source for each area for additional information.

§ The total count for the US (SEER+NPCR) may differ from the summation of the individual states reported in this table. The total uses data from the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2015 data submission for the following states: California, Kentucky, Louisiana, and New Jersey but data for those states when shown individually are sourced from the SEER November 2014 submission.

* Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 cases were reported in a specific area-sex-race category. If an average count of 3 is shown, the total number of cases for the time period is 16 or more which exceeds suppression threshold (but is rounded to 3).

^{1}Source: CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) November 2014 data submission and SEER November 2014 submission.

^{6}Source: State Cancer Registry and the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) November 2014 data submission. State rates include rates from metropolitan areas funded by SEER.

^{10}Source: Incidence data provided by the National Program of Cancer Registries (NPCR). EAPCs 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 1969-2013 US Population Data File is used with NPCR November 2014 data.

Please note that the data comes from different sources. Due to different years of data availablility, most of the trends are AAPCs based on APCs but some are APCs calculated in SEER*Stat. Please refer to the source for each graph for additional information.

Interpret Rankings provides insight into interpreting cancer incidence statistics. When the population size for a denominator is small, the rates may be unstable. A rate is unstable when a small change in the numerator (e.g., only one or two additional cases) has a dramatic effect on the calculated rate.