## Interpretation of Incidence Rates Data

### Incidence Rate Report for Rhode Island by County

Melanoma of the Skin, 2009-2013

All Races (includes Hispanic), Female, 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**

#### Rhode Island^{6,10}

- Rate : The incidence rate is 19.0 with a 95% confidence interval from 17.5 to 20.6 and 122 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 2.5 with a 95% confidence interval from -7.7 to 13.7.

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

- Rate : The incidence rate is 16.2 with a 95% confidence interval from 16.1 to 16.3 and 28,423 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 0.1 with a 95% confidence interval from -1.0 to 1.2.

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

- Rate : The incidence rate is 14.5 with a 95% confidence interval from 12.8 to 16.5 and 53 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 3.5 with a 95% confidence interval from -9.3 to 18.2.

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

- Rate : The incidence rate is 20.6 with a 95% confidence interval from 14.3 to 29.1 and 7 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 18.8 with a 95% confidence interval from -18.5 to 73.2.

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

- Rate : The incidence rate is 22.8 with a 95% confidence interval from 18.8 to 27.6 and 24 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is -7.3 with a 95% confidence interval from -22.0 to 10.2.

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

- Rate : The incidence rate is 24.5 with a 95% confidence interval from 18.9 to 31.5 and 14 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 12.6 with a 95% confidence interval from -12.6 to 45.1.

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

- Rate : The incidence rate is 27.0 with a 95% confidence interval from 21.9 to 32.9 and 22 average annual cases over 2009-2013.
- Recent Trend : The trend is stable because the trend is 3.0 with a 95% confidence interval from -19.1 to 31.1.

**Notes:**

Created by statecancerprofiles.cancer.gov on 03/28/2017 7:52 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 1969-2014 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.