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15 Cards in this Set
- Front
- Back
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What are the three elements the mortality/death rate is based upon?
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A defined population exposed to risk of death
Defined time period Number of deaths occuring in that pupulation group during the time period |
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What is the crude death rate?
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Total number of deaths during a calendar year
/ Estimated mid year population in that year *1000 |
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What is age-specific death rate?
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Total number of deaths among people aged 45-54 years during a calendar year
/ Estimated mid-year population aged 45-54 in that year |
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What is the cause-specific death rate?
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Total number of deaths from a particular cause during a calendar year
/ Estimated mid year population in that year |
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Death rate =
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Total number of deaths occurring in people under follow up (i.e. at risk)
/ Total number of person years of follow up |
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Case fatality rate =
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A measure of the risk of death in people with the disease
Number of deaths in a time period due to a particular disease / Number of cases of that disease in the same period |
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What is the standardised mortality ratio used for?
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Comparing death rates between populations
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How do you calculate SMR?
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Observed number of deaths/expected number of deaths
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What do you need to calculate SMR? (3)
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Number of subjects in each age group for the population of interest
Total number of deaths in the population of interest Age-specific death rates in the standard population |
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The process used to calculate SMR is sometimes referred to as
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'Indirect standardisation'
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SMR = 100 shows
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Death rate in pop of interest is same as in standard pop
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SMR > 100 shows
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Death rate in pop of interest is higher than that in standard pop
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SMR < 100 shows
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Death rate in pop if interest is lower than that in standard pop
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Each cause of death is given a code, what is the name for this code?
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The ICD code
E.g. Myocardial infarction = I21 |
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What is the '1c' part of the death certificate used for?
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The underlying cause of death
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