## Interpretation of Incidence Rates Data

### Incidence Rate Report for Maryland by County

Colon & Rectum, 2009-2013

All Races (includes Hispanic), Both Sexes, 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**

#### Maryland^{6,10}

- Rate : The incidence rate is 37.6 with a 95% confidence interval from 36.9 to 38.3 and 2,358 average annual cases over 2009-2013.
- Recent Trend : The trend is falling because the trend is -2.6 with a 95% confidence interval from -3.7 to -1.4.

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

- Rate : The incidence rate is 40.6 with a 95% confidence interval from 40.5 to 40.7 and 139,095 average annual cases over 2009-2013.
- Recent Trend : The trend is falling because the trend is -3.0 with a 95% confidence interval from -3.7 to -2.3.

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

- Rate : The incidence rate is 51.4 with a 95% confidence interval from 45.3 to 58.3 and 53 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -2.4 with a 95% confidence interval from -14.9 to 11.8.

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

- Rate : The incidence rate is 50.0 with a 95% confidence interval from 39.3 to 63.0 and 15 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 6.4 with a 95% confidence interval from -20.0 to 41.7.

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

- Rate : The incidence rate is 48.7 with a 95% confidence interval from 39.7 to 59.4 and 21 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 5.9 with a 95% confidence interval from -20.5 to 41.2.

#### Baltimore City^{6,10}

- Rate : The incidence rate is 46.9 with a 95% confidence interval from 44.5 to 49.4 and 296 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -2.6 with a 95% confidence interval from -10.0 to 5.4.

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

- Rate : The incidence rate is 43.9 with a 95% confidence interval from 40.1 to 48.0 and 104 average annual cases over 2009-2013.
- Recent Trend : The trend is falling because the trend is -9.7 with a 95% confidence interval from -15.5 to -3.5.

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

- Rate : The incidence rate is 43.7 with a 95% confidence interval from 34.6 to 54.6 and 16 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 1.2 with a 95% confidence interval from -19.4 to 27.0.

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

- Rate : The incidence rate is 42.9 with a 95% confidence interval from 39.4 to 46.7 and 116 average annual cases over 2009-2013.
- Recent Trend : The trend is falling because the trend is -5.3 with a 95% confidence interval from -6.1 to -4.6.

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

- Rate : The incidence rate is 41.6 with a 95% confidence interval from 36.2 to 47.7 and 45 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 2.7 with a 95% confidence interval from -15.2 to 24.4.

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

- Rate : The incidence rate is 41.4 with a 95% confidence interval from 36.1 to 47.4 and 45 average annual cases over 2009-2013.
- Recent Trend : The trend is falling because the trend is -7.8 with a 95% confidence interval from -13.8 to -1.3.

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

- Rate : The incidence rate is 40.8 with a 95% confidence interval from 36.6 to 45.3 and 71 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -3.4 with a 95% confidence interval from -10.2 to 3.9.

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

- Rate : The incidence rate is 39.3 with a 95% confidence interval from 37.5 to 41.1 and 387 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -2.6 with a 95% confidence interval from -7.5 to 2.6.

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

- Rate : The incidence rate is 38.8 with a 95% confidence interval from 28.6 to 51.8 and 11 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 8.6 with a 95% confidence interval from -13.2 to 35.8.

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

- Rate : The incidence rate is 38.7 with a 95% confidence interval from 34.8 to 43.0 and 75 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 1.4 with a 95% confidence interval from -4.1 to 7.3.

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

- Rate : The incidence rate is 38.2 with a 95% confidence interval from 29.9 to 48.2 and 15 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 3.0 with a 95% confidence interval from -25.0 to 41.4.

#### Prince Georges County^{6,10}

- Rate : The incidence rate is 36.3 with a 95% confidence interval from 34.4 to 38.3 and 293 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -1.0 with a 95% confidence interval from -4.9 to 3.1.

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

- Rate : The incidence rate is 36.2 with a 95% confidence interval from 31.7 to 41.2 and 50 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -6.1 with a 95% confidence interval from -28.2 to 22.9.

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

- Rate : The incidence rate is 34.4 with a 95% confidence interval from 27.7 to 42.4 and 22 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -6.1 with a 95% confidence interval from -21.2 to 11.9.

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

- Rate : The incidence rate is 34.1 with a 95% confidence interval from 28.5 to 40.5 and 29 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -2.3 with a 95% confidence interval from -12.2 to 8.7.

#### Anne Arundel County^{6,10}

- Rate : The incidence rate is 33.8 with a 95% confidence interval from 31.6 to 36.0 and 193 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -2.8 with a 95% confidence interval from -9.1 to 3.9.

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

- Rate : The incidence rate is 33.5 with a 95% confidence interval from 28.2 to 39.5 and 31 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 4.7 with a 95% confidence interval from -8.8 to 20.1.

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

- Rate : The incidence rate is 32.8 with a 95% confidence interval from 29.7 to 36.1 and 91 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -3.3 with a 95% confidence interval from -14.8 to 9.6.

#### St. Marys County^{6,10}

- Rate : The incidence rate is 32.7 with a 95% confidence interval from 27.9 to 38.2 and 34 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -3.3 with a 95% confidence interval from -18.6 to 14.9.

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

- Rate : The incidence rate is 29.0 with a 95% confidence interval from 27.6 to 30.5 and 312 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -0.5 with a 95% confidence interval from -5.7 to 4.9.

#### Queen Annes County^{6,10}

- Rate : The incidence rate is 28.6 with a 95% confidence interval from 22.8 to 35.5 and 17 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -4.1 with a 95% confidence interval from -20.1 to 15.1.

**Notes:**

Created by statecancerprofiles.cancer.gov on 12/02/2016 11:35 pm.

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 1969-2014 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.

^{1}Source: CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) November 2015 data submission and SEER November 2015 submission as published in

*United States Cancer Statistics*.

^{6}Source: State Cancer Registry and the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) November 2015 data submission.

^{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 1969-2014 US Population Data File is used with NPCR November 2015 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.