Lethality
Deadliness of a disease. Case Fatality Rate The proportion of persons contracting a disease who die from it over a specified period. This rate is a measure of the virulence of the disease.
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Nuptiality
The frequency, characteristics, and dissolution of marriages in a population. Crude marriage rate : The ratio of the number of marriages during the year to the average population in that year. The value is expressed per 1000 inhabitants. A variety of marriage rates are used to measure nuptiality: first marriage rate, remarriage rate etc.
Doubling time
The number of years required for a specified population to double in size at the current rate of population growth.
Epidemic
A mass outbreak of a disease in a particular geographic area which spreads and then disappears relatively quickly.
Population density
The number of people per unit area, generally expressed per square kilometre.
Mortality Crisis
A sudden broad Increase in the death rate.
Pandemic
An epidemic that spreads over a very wide area
Demographic survey
A canvass of selected persons or households in a population, usually used to infer demographic characteristics or trends for a larger population segment or for the population as a whole.
Mortality
The occurence of deaths in a given population. Crude mortality rate : The number of deaths in a specified period (usually one year) divided by the average total population in that period (usually taken as the mid-year population). The rate is normally expressed per 1,000 population. Standardized mortality rate Adjusted mortality rate for a given cause of death or country ...
Stillbirth
Expulsion from the mother of a dead foetus after 24 weeks of gestation.Synonym: late foetal death The expulsion or extraction of an embryo or fœtus from the mother’s body before the 6th month of pregnancy is called an abortion or a miscarriage Stillbirth rate: The stillbirth rate is the ratio of stillbirths to total live and stillbirths.