Espérance de vie à la naissance, total

L'espérance de vie à la naissance indique le nombre d'années qu'un nouveau-né devrait vivre si les règles générales de mortalité au moment de sa naissance devaient rester les mêmes tout au long de sa vie.

  • Source: Source : tiré de l'espérance de vie des hommes et des femmes à la naissance. Espérance de vie des hommes et des femmes. Source : ( 1 ) Division des Nations Unies pour la population. 2009. World Population Prospects: The 2008 Revision ( Perspectives relatives à la population mondiale : révision de 2008 ). New York, Nations Unies, Département des affaires sociales et économiques ( tableaux Excel avancés ), ( 2 ) Rapports de recensement et autres publications statistiques des bureaux nationaux de statistiques, ( 3 ) Eurostat : statistiques démographiques, ( 4 ) Secrétariat de la Communauté du Pacifique : programme de statistiques et de démographie et ( 5 ) Bureau du recensement américain : base de données internationale.
  • Licence:  CC BY-4.0 
  • Méthode d’agrégation: Weighted average
  • Pertinence sur le plan du développement: Mortality rates for different age groups (infants, children, and adults) and overall mortality indicators (life expectancy at birth or survival to a given age) are important indicators of health status in a country. Because data on the incidence and prevalence of diseases are frequently unavailable, mortality rates are often used to identify vulnerable populations. And they are among the indicators most frequently used to compare socioeconomic development across countries.
  • Limites et exceptions: Annual data series from United Nations Population Division's World Population Prospects are interpolated data from 5-year period data. Therefore they may not reflect real events as much as observed data.
  • Périodicité: Annual
  • Concept et méthodologie statistiques: Life expectancy at birth used here is the average number of years a newborn is expected to live if mortality patterns at the time of its birth remain constant in the future. It reflects the overall mortality level of a population, and summarizes the mortality pattern that prevails across all age groups in a given year. It is calculated in a period life table which provides a snapshot of a population's mortality pattern at a given time. It therefore does not reflect the mortality pattern that a person actually experiences during his/her life, which can be calculated in a cohort life table. High mortality in young age groups significantly lowers the life expectancy at birth. But if a person survives his/her childhood of high mortality, he/she may live much longer. For example, in a population with a life expectancy at birth of 50, there may be few people dying at age 50. The life expectancy at birth may be low due to the high childhood mortality so that once a person survives his/her childhood, he/she may live much longer than 50 years.