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Unintentional Injury Death Data Trends for Years 2000-2010   DS 13-13000

Brief Death Statistics Points


Please see the Technical Notes section for complete rate information.

Statistical Term



Number of Deaths

The total number of deaths based on the criteria chosen is the numerator.



Total population based upon the specific criteria selected such as the population in a specific sex, race, and age group. Population figures are based on Department of Finance estimates or projections. This is the denominator, and it is known as the population at risk.

Crude Death Rate

Number of deaths divided by the estimated or projected total population. Number of deaths for a specific age group, particular sex, or certain race utilizes the same formula with the appropriate specific group population.

Indicates the average chance of dying, or enables comparison by specific groups over time.

Number of Deaths

Total Population


x 100,000

Age-Specific Death Rate

Number of deaths in a specific age group divided by the estimated or projected population in that age group.

Compares death rates by age groups at a specific point in time, or an age group over time.


Number of deaths
within a specific
age group

Population in
age group



x 100,000


Age-Adjusted Death Rate

Age specific rates multiplied by their respective 2000 US Standard Population Weight summed to produce age-adjusted rates.

Removes the potential bias that occurs when the populations being compared have different age distributions and facilitates the comparison of different groups for example counties, race, sex, etc. or over time.


Formula for creating age-adjusted death rates.




x 100,000



Simple average of numbers.

Point of balance, the preferable measure of central tendency, and represents the greatest stability with further statistical uses.

Sum of things

Total number
of things

Deviation of

Age minus the mean age (x).  Square the age difference (x2 ).  Sum the squares and divide by the total number (N).  Calculate the square root.

Tells you how spread out your set of numbers is compared to the mean.

Formula for calculating standard deviation.


Read More:
At a Glance
California Total Population
Male and Female Populations
Race/Ethnicity Group Differences
Sex Differences Within Race/Ethnicity
County of Residence Populations
Tables (PDF)Opens a new browser window.
Technical Notes
Vital Statistics Query System

Helpful Resources

Centers for Disease Control and Prevention:
  Injury and Violence Prevention and Control
  Protect the Ones You Love: Child Injuries are Preventable

California Department of Public Health, EpiCenter

National Safety Council

Last modified on: 11/19/2014 7:59 AM