Infecundity
The biological inability of a man, a woman or a couple to produce a live birth.Synonym: sterility
The biological inability of a man, a woman or a couple to produce a live birth.Synonym: sterility
Migration within a country.
Movement of individuals or populations to settle in a different country. Migration into a country is referred to as immigration, and migration from a country as emigration. 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.
Time lived since birth.Age can be calculated in a number of ways: Age in completed years: age at last birthday, i.e. number of complete years lived by an individual at a given moment in time. Age reached: difference between the current year and the year of birth. It is used to define a birth cohort Exact age: it measures ...
Distribution of fertility by mothers’ agesIt can be determined by calculating mean age at childbearing, or if it concerns first birth fertility, mean age at first birth. When a decrease in fertility at younger ages is at least partially offset by an increase in fertility at older ages, fertility timing is said to be postponed.
Distribution of first marriages by age at marriage.Also called mean age at first marriage.
Transition from a regime of "natural" fertility (not controlled by couples) towards a regime of "controlled" fertility.
or Epidemiological transition The period of mortality decline which accompanies the demographic transition. It is characterized by improved health, nutrition and organization of health services and a change in the causes of death, with mortality from infectious diseases progressively being replaced by mortality from chronic and degenerative diseases and accidents.
or Health transition The period of mortality decline which accompanies the demographic transition. It is characterized by improved health, nutrition and organization of health services and a change in the causes of death, with mortality from infectious diseases progressively being replaced by mortality from chronic and degenerative diseases and accidents.
The situation where an area’s population exceeds the area’s carrying capacity.