Celibacy
The condition of a person who has never been married, not to be confused with that of a person who does not cohabit with a partner.
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Permanent celibacy
In demography, permanent celibacy is measured by the proportion of persons who have never been married at the age of 50.
Immigrant
A person who settles in a country other than their country of origin. In France, a person who has acquired French nationality since arriving in France is still counted as an immigrant, though not a person born as a French national abroad. Immigrants are qualified by their country of origin and not their nationality.
Incidence of a disease
Number of new cases of a disease in a year in a given population. Incidence should be distinguished from prevalence which refers to the number of sick people at a given time. Incidence rate of a disease Number of persons contracting a disease per 1,000 population at risk. It is generally expressed for a year.
Prevalence of a disease
The total number of people affected by a disease in a population, including both new and existing cases. Prevalence Rate Number of people having a particular disease at a given point in time per 1,000 population at risk. Prevalence data hence show the magnitude of a given health problem and are important in planning services and allocating resources.
Net migration
Net migration is the difference between the number of persons who enter a territory (immigrants) and the number who leave (emigrants), generally calculated over a year.
Reconstituted family
Family composed of an adult couple, married or unmarried, living with at least one child born from a previous union of one of the partners.
Single-parent family
Family composed of a lone parent living with at least one child.
Fecundability
Probabilité d'obtenir une grossesse au cours d'un cycle menstruel. Synonyme : probabilité mensuelle de conception
Fecundity
Biological capacity, of a woman, a man or a couple, to produce a live birth. Fecundity varies widely from one individual and from one couple to another. Beyond such individual variations, fecundity in women reaches its maximum at around age 20, starts decreasing slowly to age 35, and then more rapidly after age 35 until it falls to zero at around ...