Rates & Ratios
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Vital Statistics - 1999
Data used to prepare this report are taken from birth and death certificates,
fetal death reports, marriage applications, and divorce reports occurring
in calendar year 1999 and filed in the Office of the West Virginia Registrar
of Vital Statistics prior to June 1, 2000. Vital events occurring to West
Virginia residents in other states and recorded in the office of the registrar
by June 1 are also included in totals by residence.
Place of Residence vs. Place of Occurrence
Data on vital events can be reported in two ways: by county of residence
or by county of occurrence. For example, Lincoln County reported 120 deaths
as occurring within the confines of the county. However resident deaths
for the county for 1999 totaled 237. With the exception of Table 25, the
mortality data presented in this report are based on county of residence,
as county resident populations are used to calculate rates.
With the exception of Table 6, birth data are similarly reported by
county of residence.
All statistics contain variations that are the result of chance. This
characteristic is of particular importance in classifications of events
with small numbers, where small variations are proportionately large in
relation to base figures. For example, small changes in the number of
deaths or births in small population areas or in the number of deaths
from uncommon causes could result in large changes in the respective rates.
For this reason, rates for counties with small populations or other small
bases should be used with caution.
The county has been used as the basic unit of tabulation throughout
this report. Data have also been supplied for public health management
districts and for the total state. In some instances, data have been supplied
for individual cities.
Cause of Death Classification
The cause of death is coded from information contained in the medical
certification section of the death certificate. This portion of the certificate
is completed by the attending physician. In the case of unattended death,
the medical examiner is responsible for investigation and certification.
Effective in 1999, the National Center for Health Statistics and the World
Health Organization adopted the tenth revision to the International Classification
of Diseases. See Appendix B, "Groupings of ICD-10 Codes," for
an explanation of ICD-10 revised and a listing of the selected causes
International Classification of Diseases (ICD)
The primary cause of death was coded in accordance with the Tenth Revision
of the International Classification of Diseases Adapted for Use in the
United States, 1999 (ICD). The deaths with codes A00 through T98 and Z00-Z99
were coded using the "nature of injury" causes, while those
with codes V01 through Y98 were coded using the "external cause"
of death. The external codes are used to indicate a death due to an external
rather than an internal cause. Thus, a death from a gunshot wound would
be coded using an external code, while a death due to cancer would not
have an external code.
In several tables individual causes of death have been grouped into important
selected causes of death. The ICD codes for the different groupings can
be found in Appendix B.
The rates given in this publication were calculated using the 1999 population
estimates from the U.S. Department of Commerce, Bureau of the Census.
The following is a list of the certificates and forms used in obtaining
the data used in this publication. A sample copy of each can be found
in Appendix A.
Certificate of Live Birth
Physician's/Medical Examiner's Certificate of Death
Report of Fetal Death
Application for Marriage License
Monthly Report of Divorces and Annulments of Marriages Granted
Suggestions and comments on alternate methods of data presentation are
welcome. Forward any suggestions to the following address:
Health Statistics Center
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Office of Epidemiology and Health Promotion
350 Capitol Street, Room 165
Charleston, WV 25301
Telephone: (304) 558-9100
FAX: (304) 558-1787
RATES AND RATIOS
The impact of chance variation must be considered
in evaluating categories with small frequencies. For example, a small
change in the number of infant deaths in a county can disproportionately
affect the infant mortality rate for that county. Rates for cities and
counties therefore require special consideration. Regional and state rates,
with larger frequencies, provide more accurate data overall.
Rates used in this report are calculated with the 1999 population estimates
from the US Department of Commerce, Bureau of the Census.
Birth Rate (Crude) = (Number of live births / Population) X 1,000
Death Rate (Crude) = (Number of deaths / Population) X 1,000
Cause of Death Rate = (Number of deaths from a stated cause / Population)
Infant Death Rate = (Number of infant deaths / Number of live births)
Neonatal Death Rate = (Number of neonatal deaths / Number of live births)
Fetal Death Ratio = (Number of fetal deaths / Number of live births)
Maternal Death Rate = (Number of maternal deaths / Number of live births)
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LIVE BIRTH - A live birth is the complete expulsion or extraction
from its mother of a result of conception, irrespective of the duration
of pregnancy, which, after such separation, breathes or shows any other
evidence of life, such as beating of the heart, pulsation of umbilical
cord, or definite movement of voluntary muscles.
BIRTHWEIGHT - The weight of the fetus or infant at the time of
LOW BIRTHWEIGHT - A weight at birth of under 2,500 grams or 5
lbs., 8 oz.
CAUSE OF DEATH - The underlying cause of death, or that condition
giving rise to the chain of events leading to death.
FETAL DEATH (STILLBIRTH) - Death prior to the complete expulsion
or extraction from its mother of a product of conception, having passed
through at least the 20th week of gestation.
INFANT DEATH - Death occurring to an individual of less than
one year of age.
NEONATAL DEATH - The death of a live-born infant that occurs within
the first 27 days of life.
POSTNEONATAL DEATH - The death of a live-born infant that occurs
after the 27th day of life but before one year of age.
MATERNAL DEATH - Deaths due to delivery or a complication of pregnancy,
childbirth, or the puerperium as defined by the International Classification
OCCURRENCE DATA - Vital statistics compiled on the basis of where
the vital event actually occurred.
RESIDENCE DATA - Vital statistics compiled on the basis of the
usual place of residence of the person(s) to whom the vital event occurred.
For births and fetal deaths, residence is defined as the mother's usual
place of residence.
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|GROUPINGS OF ICD-10 CODES
||Human Immunodeficiency Virus Infection
||--of Digestive Organs
||--of Respiratory and Intrathoracic Organs
||----Trachea, Bronchus, and Lung
||--of Genitourinary Organs
||--All Other (Malignant Neoplasms)
||Benign Neoplasms, Carcinoma in Situ, and Neoplasms of
||Major Cardiovascular Diseases
|I00-I09, I11, I13, I20-I51
||--Diseases of the Heart
||----Ischemic Heart Disease
||–Essential Hypertension and Hypertensive Renal Disease
||--Other Diseases of the Arteries, Arterioles, and Capillaries
||Influenza and Pneumonia
||Chronic Lower Respiratory Diseases
|| --Bronchitis, Emphysema, and Asthma
||Lung Diseases Due to External Agents
||--Coal Worker's Pneumoconiosis
||Chronic Liver Disease and Cirrhosis
|N00-N07, N17-N19, N25-N27
||Nephritis, Nephrotic Syndrome, and Nephrosis
||Congenital Anomalies (Congenital Malformations, Deformations,
and Chromosomal Abnormalities)
||Ill-Defined and Unknown Causes of Death
||–Smoke, Fire, and Flames
||--All Other (Accidents)
||Intentional Self-Harm (Suicide)
||All Other Causes (Residual)
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