Understanding Cancer and the Numbers Camdenton Community Advisory - - PowerPoint PPT Presentation

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Understanding Cancer and the Numbers Camdenton Community Advisory - - PowerPoint PPT Presentation

Understanding Cancer and the Numbers Camdenton Community Advisory Team Meeting May 8, 2018 Missouri Department of Health and Senior Services Division of Community and Public Health Office of Epidemiology Overview What is cancer? How


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Understanding Cancer and the Numbers

Camdenton Community Advisory Team Meeting May 8, 2018

Missouri Department of Health and Senior Services Division of Community and Public Health Office of Epidemiology

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Overview

 What is cancer?  How common is cancer?  What factors increase our risk?  Can we do anything to decrease the risk?  What do the numbers tell us?  What is Epidemiology?

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Epidemiology

 Study of disease or

health events in populations

 Determinants of the

diseases

 Application of

findings to prevent and control health problems

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Epidemiology

Groups

 Summary data  Population groups  Disease surveillance  Risks or protective

factors for disease

 Community screening

Individual

 Requires special study  Many factors involved

 Exposure or contact?  For how long?  Personal & Family history?  Many others…

 Staff resources & expertise  Very costly

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Missouri Cancer Registry

 1972 MCR established with voluntary hospital reporting  1984 bill passed required hospital inpatient cancer

reporting (192.650 RSMo)

 1992 National Program of Cancer Registries (Public Law

102-515) administered by Centers for Disease Control and Prevention

 1996 NPCR reference year  1999 bill passed expanding reporting to other entities such

as physician offices, pathology laboratories, ambulatory surgical centers, residential care facilities, free-standing cancer clinics, etc. (192.650 – 192.657 RSMo)

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Missouri Cancer Registry Data

 Demographics at diagnosis  Date of diagnosis  Primary tumor location  Tumor characteristics  Lymph nodes  Initial treatment  Death data  Risk factors (Mo specific)  Usual occupation / industry (when available)

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MCR Data Limitations

 Prior to 1996 data are in various degrees of

completeness

 Captures address at time of diagnosis  May not be able to account for people who

 moved away from the area and then

were diagnosed with cancer

 were diagnosed and died prior to 1996

 Limited information on occupation and risk

factors

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Cancer Inquiry

 Works with individuals or communities to:

 Explore their cancer concern  Provide health education on cancer and lifestyle

risk factors

 Provide epidemiological information

 Most identified cancer excesses are due to

normal random variation in cancer

  • ccurrences, or to personal behaviors,

genetic causes, or unknown factors

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Cancer Statistics (Numbers)

Help understand the burden of cancer on society

 How many people are diagnosed each year (incidence)  Number of people living with cancer (prevalence)  Number of people who die from cancer (mortality)  Are there significant differences among certain groups

  • f people (disparities)

 Historic data used to monitor changes over time

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Frequently asked questions…

 Why do I know so many people with

cancer?

 Why am I burying so many of my friends

that were diagnosed with cancer?

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Cancer is a common disease…

In 2018, estimated:

 1.7 million new cases

in U.S.

 35,000 new cases in

Missouri

 600,000 deaths in the

U.S. and 13,000 in Missouri

1 in 3 people

will develop cancer in their lifetime

11 American Cancer Society, Inc. Cancer Facts & Figures 2018 https://www.cancer.org/content/dam/cancer-org/research/cancer-facts-and-statistics/annual- cancer-facts-and-figures/2018/cancer-facts-and-figures-2018.pdf

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Cancer

Group of diseases – more than 100 types

Named by organ or tissue of

  • rigin

Uncontrolled growth of abnormal cells due to genetic changes / DNA damage

Occurrence varies by population groups Brain Cancer Cells Breast Cancer Cell Dividing lung cancer cell National Institutes of Health

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Genetics / Host Environment Social / Cultural

  • Tobacco
  • Alcohol
  • Diet
  • Others
  • Contaminants
  • Occupation
  • Viruses
  • Others
  • Age / Gender
  • Immune system
  • Comorbidities
  • Others

Multiple genes can interact with a number of environment and social factors

Institute of Medicine (US) Cancer and the Environment: Gene-Environment Interaction and From Cancer Patient to Cancer Survivor Lost in Transition

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Cancer Risk Factors

 Tobacco use 30%*  Diet 20-35%*  Physical inactivity 5%  Excess body weight 7%  Occupation 4%  Genetic susceptibility 5-10%  Alcohol 2-4%  Infectious agents 10%*  Reproductive factors 7%*  Environmental pollution 2%  Low economic status 3%  Ultraviolet light/Radiation 3%

*Estimated largest contributors to cancer deaths

Exceeds 100% from combining resources and interrelationship of risk factors.

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Latency

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If exposure

  • r contact

Subclinical Clinical Recognition Diagnosis Symptoms

The time between exposure and clinical recognition – varies by cancer May be 10 years, 20 years, or more

Environmental Contaminant

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Trichloroethylene (TCE)

 Health effects depend on several factors:

direct or indirect exposure or contact route, dose, length of exposure, and

  • ther factors – gender, age, body size,

lifestyle, other exposures and health issues

 Potential increased risk for certain

cancers and other non-cancer health effects (central nervous system, immune system, etc.)

 Primary cancers sites:

kidney with limited evidence for non- Hodgkin lymphoma and liver

16 Agency for Toxic Substances and Disease Registry, Toxicological Profile https://www.atsdr.cdc.gov/index.html

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Breakdown products of TCE including Vinyl Chloride

 Human carcinogen – liver cancer  Lengthy latency period  Occupational exposure - cancers  Lung and respiratory tract  Lymphatic and blood  Brain and central nervous system  Newer studies did not find significant association

with respiratory tract or brain cancers

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CITCAT Question…

 “What are the different types or routes of

exposure?”

 Inhalation  Ingestion  Dermal

 Duration of exposure

 Acute (14 days or less)  Intermediate (15 – 364 days)  Chronic (365 days or more)

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CITCAT Questions…

 “What types of cancer can be

caused by TCE and what kind of exposures lead to the types of cancer?”

 Multisite carcinogen in rats and mice.  The EPA concluded that TCE is

carcinogenic to humans by all routes of exposure based on convincing evidence

  • f a causal association between TCE

exposure in humans and kidney cancer.

19 Agency for Toxic Substances and Disease Registry. Draft Toxicological Profile for Trichloroethylene, October 2014 (page 83), https://www.atsdr.cdc.gov/toxprofiles/tp19.pdf

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Leading Sites of New Invasive Cancer Cases, Missouri, 2014

Lung and Bronchus 5,349 Female Breast 4,843 Prostate 3,154 Colon/Rectum/ Rectosigmoid 2,902 Urinary Bladder 1,466 Melanoma 1,330 Non-Hodgkin Lymphoma 1,324 Kidney and Renal Pelvis 1,276 Corpus and Uterus, NOS 991 Pancreas 960 Other cancers 8,339 Missouri Department of Health and Senior Services. Cancer Incidence Missouri Information for Community Assessment (MICA). https://webapp01.dhss.mo.gov/MOPHIMS/MICAHome 20

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Missouri

1 2 3 4 5 7 6

  • 8

10 Missouri Cancer Registry and Research Center http://mcr.umh.edu/mcr-county-level-data.php

*Risks: Tobacco use and heavy alcohol (30-fold), human papillomavirus

*

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Cancers Linked to TCE and Breakdown Products

Lung / bronchus*

Kidney / renal pelvis*

Non-Hodgkin lymphoma*

Leukemia

Brain / central nervous system

Liver / intrahepatic bile ducts

Hodgkin lymphoma

Female Breast* (community interest)

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Camden County compared to Missouri

*Included in top 10 cancers

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Age-adjusted Rate

 Rate is the number of cases divided by the

population

 Age-adjustment is a process applied to rates of

disease that allows communities with different age distributions to be compared

 Confidence Intervals a range around a

measurement and indicates precision that the true value falls in that range

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Random fluctuations X X

Statistical Significance Statistical Significance

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Invasive Cancer Incidence Rates^ 1996-2014

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126.4 78.6 19.0 15.9 13.0 7.0 5.8 120.8 75.1 16.6 14.4 12.1 6.0 3.6

20 40 60 80 100 120 140

Female Breast Lung / Bronchus Non-Hodgkin Lymphoma Kidney / Renal Pelvis Leukemia Brain / Other CNS Liver / Bile Ducts*

Age-adjusted Rate

Missouri Camden

^Age-adjustment uses 2000 US standard population; rate per 100,000 people CNS = central nervous system

*Rate statistically significantly lower in Camden County for liver and intrahepatic bile ducts cancer No significant difference for remaining cancers

Missouri Department of Health and Senior Services, Missouri Information for Community Assessment Cancer Incidence, https://webapp01.dhss.mo.gov/MOPHIMS/MICAHome

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Cancer Death Rates, 1999-2016

57.9 24.3 7.6 6.7 5.4 4.6 4.5 51.4 21.0 6.1 5.0 4.5 4.1 4.0

10 20 30 40 50 60 70

Lung / Trachea / Bronchus* Female Breast Leukemia Non-Hodgkin Lymphoma* Liver / Intrahepatic Bile Ducts Brain / Meninges / CNS Kidney / Renal Pelvis

Age adjusted Rate

Missouri Camden

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*Rate statistically significantly lower in Camden County for lung and non-Hodgkin lymphoma

Missouri Department of Health and Senior Services, Death MICA, https://webapp01.dhss.mo.gov/MOPHIMS/MICAHome

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Percent of Female Breast Cancers by Stage at Diagnosis, Missouri vs Camden County 1996-2014

In situ Localized Regional Distant Unknown

Camden 13.3 53.3 25.7 4.4 3.3 Missouri 16.5 50.8 25.1 4.5 3.2

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Stage at diagnosis is similar between Camden County and Missouri

Missouri Department of Health and Senior Services, Missouri Information for Community Assessment Cancer Incidence, https://webapp01.dhss.mo.gov/MOPHIMS/MICAHome

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Cancer Incidence

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Zip Code 65020 Camdenton Compared to rest

  • f Missouri

Compared to remainder of the County

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Observed vs Expected Cases, Zip Code 65020 vs rest of Missouri, 1996-2015

No statistically significant differences compared to the rest of state

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297 66 65 40 21 18 10 302.5 70.0 58.8 46.0 22.3 20.3 7.5 50 100 150 200 250 300 350 Lung / Bronchus Non-Hodgkin Lymphoma Kidney / Renal Pelvis Leukemia Brain Liver / Intrahepatic bile ducts Hodgkin Lymphoma

Number of Cases Observed Expected Missouri Cancer Registry and Research Center

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Observed vs Expected Cases, Zip Code 65020 vs rest of Camden County, 1996-2015

297 66 65 40 21 18 10 278.6 57.1 46.5 39.9 17.1 12.2 8.2

50 100 150 200 250 300 350

Lung / Bronchus Non-Hodgkin Lymphoma Kidney / Renal Pelvis Leukemia Brain Liver / Intrahepatic bile ducts Hodgkin Lymphoma

Number of Cases Observed Expected

One statistically significant difference

 Kidney / renal pelvis  Observed 65 cases  Expected 46.5 cases  SIR 1.40  95% CI 1.08 – 1.78

29 Missouri Cancer Registry and Research Center

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Kidney Cancer Cases in Zip Code 65020, 1996-2015

 55% were 65 years of age or older  65% were men  60% were diagnosed early in a localized

stage

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Number of Kidney Cancer Cases by 4-Year Groups, Zip Code 65020, 1996-2015

31 2 4 6 8 10 12 14 16 18 20 1996-1999 2000-2003 2004-2007 2008-2011 2012-2015

Number of Cases

Joinpoint analysis showed an annual percent change -2.1% Not statistically significant (p = 0.2)

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Risk Factors for Kidney Cancer

 Smoking  Obesity  Family history  Occupation exposures  Environmental exposures  High blood pressure  Certain medicines  Gender – males  Certain genetic conditions  Others

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Summary

Camden County vs Missouri New cases

 No statistically significant difference for 6 of

the 7 cancers of interest and statistically significantly lower for the 7th - liver cancer Deaths

 Significantly lower for two cancers:

lung and non-Hodgkin lymphoma Breast cancer – no significant differences

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Summary

Zip Code 65020

 No statistically significant differences when

compared to the rest of Missouri

 One statistically significant difference when

compared to the rest of the county (kidney cancer cases higher than expected)

 Most of the kidney cancer cases occurred in at-

risk population (men 2x more likely than women to develop)

 Trend in kidney cancer cases may be headed

downward

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Summary

  • Cancer is not one disease. Different cancers, like
  • ther chronic diseases, have different causes and risk

factors

  • Age, family history (genetics) and lifestyle

factors such as smoking and obesity are important risk factors for cancer

  • Because different cancers have different causes

and risk factors, Different cancer types are not usually related to a similar environmental exposure

  • Clustering can still be a random occurrence,

even when statistical tests indicate that cancer cases are higher than expected

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Next Steps

 Cancer inquiry recommended and Patient

Information Forms distributed by the community to individuals with cancer

 Each person completing a form mails the form

directly to the Cancer Inquiry Program

 Would like to have as many forms returned to the CI

Program as possible within 6 weeks

 Once the forms are received, case verification is

conducted by MCR

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Next Steps

 Assessment is completed of the patient information

forms

 Types of primary cancers involved  Number of cancer cases  Population demographics, geographic area

and time period

 Cases that meet criteria  Feasibility and recommendations

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For cancer-related questions:

Missouri Department of Health and Senior Services Office of Epidemiology or Cancer Inquiry Program (573) 751-6128 (573) 522-2806 Bureau of Environmental Epidemiology (573) 751-6102 or 1-888-628-9891 (toll-free) PO Box 570 Jefferson City, MO 65102 Missouri Cancer Registry http://mcr.umh.edu/

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