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Questions and Answers
Which one of these is a type of ratio frequently used in public health?
Which one of these is a type of ratio frequently used in public health?
- Cause-of-death rate
- Incidence
- Crude rate (correct)
- Prevalence
What does the specific mortality rate measure?
What does the specific mortality rate measure?
- The occurrence of a specific cause of death in a population
- The occurrence of deaths in a specific population subgroup (correct)
- The occurrence of events over a given interval of time relative to the total person-time of exposure/at risk
- The occurrence of births in a specific population subgroup
What does the general fertility rate measure?
What does the general fertility rate measure?
- The occurrence of births in a specific population subgroup (correct)
- The occurrence of a specific cause of death in a population
- The occurrence of deaths in a specific population subgroup
- The occurrence of events over a given interval of time relative to the total person-time of exposure/at risk
What does the incidence measure?
What does the incidence measure?
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What does the prevalence measure?
What does the prevalence measure?
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Study Notes
Biostatistics and Epidemiology Ratios, Proportion, and Rates
- Ratios are expressions of one measure relative to another, frequently used in public health.
- Proportion is a type of ratio that relates a part to a whole.
- Rate refers to the occurrence of events over a given interval of time relative to the total person-time of exposure/at risk.
- Pulse rate is an example of a rate, measured as beats per minute.
- Glomerular filtration rate is another example of a rate, measured as mL/min/1.73 m2.
- There are three types of rates: crude rates, specific rates, and adjusted (standardized) rates.
- Crude rates use the total population as the denominator.
- Specific rates use population subgroups as the denominator.
- Adjusted rates are constructed to permit comparison between groups that differ in some important characteristics.
- Fertility, mortality, and morbidity are key indicators used in epidemiology.
- Fertility indicators include crude birth rate and general fertility rate.
- Morbidity indicators include incidence and prevalence. Mortality indicators include crude death rate, specific mortality rate, cause-of-death rate, and infant mortality rate.
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