Cardiovascular disease has been called the silent killer and affects male and female, as well as every ethnic group. “Heart and blood vessel disease — cardiovascular disease, also called heart disease— includes numerous problems, many of which are related to a process called Atherosclerosis. Atherosclerosis is a condition that develops when a substance called plaque builds up in the walls of the arteries. This buildup narrows the arteries, making it harder for blood to flow through. If a blood clot forms, it can stop the blood flow. This can cause a heart attack or stroke.”[1] In my study, I analyze mortality due to cardiovascular disease in three categories: coronary heart disease, cerebrovascular disease, and acute myocardial infarction in three areas: Worcester, Boston and Massachusetts. The study is based on Age-adjusted rate, “a procedure for adjusting rates, designed to minimize the effects of differences in age distributions when comparing rates for different populations. Age-adjusted rates are usually expressed per 100,000 persons.”[2]
Coronary heart disease | Worcester | Boston | Massachusetts |
White
|
117.6 | 112.9 | 111.9 |
Black
|
125.9 | 106.7 | 114.1 |
Hispanic
|
57.2 | 74.9 | 56.8 |
“Coronary heart disease is a narrowing of the small blood vessels that supply blood and oxygen to the heart… [It] is the leading cause of death in the United States for men and women.”[4] Hispanic people in each community suffer less from coronary heart disease than their White and Black counterparts. Black people in Worcester, at 125.9 per 100,000 people, are most affected by coronary heart disease, as well as in Boston at 106.7 per 100,000 people, which is less than Black people as a whole in the state of Massachusetts who are impacted at 114.1 per 100,000 people. White people die the most from coronary heart disease except in Worcester. White people in Boston die at about the same rate as White people in the State.
Cerebrovascular disease
(Stroke) |
Worcester | Boston | Massachusetts |
White
|
33.6 | 32.0 | 34.6 |
Black
|
90.5 | 43.0 | 45.3 |
Hispanic
|
51.7 | 26.6 | 24.7 |
Cerebrovascular disease occurs when “blood flow to a part of the brain stops”[6] either because of a clot in an artery or a cerebral hemorrhage. Black and Hispanic people die of cerebrovascular disease twice as much in Worcester than these demographics in Boston and Massachusetts as a whole. White people in Worcester die much less of this disease than Black and Hispanics respectively at 33.6, 90.5, and 51.7 per 100,000 people. In Boston, less Hispanic people die of cerebrovascular disease than Whites and Blacks do, as we saw in the previous chart for with coronary heart disease. Interestingly, less people die of cerebrovascular disease than of coronary heart disease. The only numbers close to each other for cerebrovascular disease and coronary heart disease are Hispanics in Worcester at 57.2 and 51.7 people per 100,000.
Acute Myocardial Infarction (heart attack) |
Worcester | Boston | Massachusetts |
White
|
32.9 | 30.3 | 32.9 |
Black
|
65.6 | 23.2 | 34.3 |
Hispanic
|
11.1 | 18.0 | 18.4 |
Acute Myocardial Infarction commonly known as heart attack “occurs when blood flow is blocked for a long enough time that part of the heart muscle is damaged or dies.”[8] In each location, Whites suffer at about the same rate from cerebrovascular disease as from acute myocardial infarction. Blacks are more affected by cerebrovascular disease and coronary heart disease than by acute myocardial infarction. The most people who die from cerebrovascular disease are Blacks in Worcester at 65.6 per 100,000 people. The mortality of Blacks is twice that of Whites and six times that of Hispanics.
According to this study Hispanics, have the lowest mortality rate for cardiovascular diseases. Yet Hispanics have high risk factors for coronary disease, diabetes, obesity, and low physical activity.[9] Why are Hispanics dying of coronary diseases at a lesser rate than other ethnic groups? Is it because the death rate is not recorded properly and the cause of death not accurately determined? Are the medical records correct? Or is there a part of the Hispanic diet which counteracts the risk factors?
[1] American Heart Association. http://www.heart.org/HEARTORG/Caregiver/Resources/WhatisCardiovascularDisease/What-is-Cardiovascular-Disease_UCM_301852_Article.jsp
[2] Massachusetts Department of Public Health. Mass Community Health Information Profile. http://www.mass.gov/eohhs/researcher/community-health/masschip/topics/cardiovascular-health.html
[3] MassCHIP. 2006-2008 Mortality (Vital Records) ICD-10 based
[4] PubMed Health. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0004449/
[5] MassCHIP. 2006-2008 Mortality (Vital Records) ICD-10 based
[6] http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001740/
[7] MassCHIP. 2006-2008 Mortality (Vital Records) ICD-10 based
[8] MedlinePlus. http://www.nlm.nih.gove/medlineplus/ency/article/000195.htm
[9] Carolyn J. Swenson. Cardiovascular Disease Mortality in Hispanics and Non-Hispanic Whites. American Journal of Epidemiology, vol 156, 10, pp 919-928. http://www.aje.oxfordjournals.org/content/156/10/919.full