The WHO identifies adolescence as the period in human growth and development from ages 10 to 19. It is a period of sexual development starting from appearance of secondary sexual characters up to onset of sexual maturation; a period of behavior characteristic for adults is formed; a period of transition from full social and economic dependence on adults towards relative independence. 

The United Nations Development Assistance Framework (UNDAF) is the result of an ongoing consultative process intended to analyze how the United Nations can most effectively respond to Turkmenistan’s national priorities and needs. It is guided by the goals and targets of the Millennium Declaration, which has been endorsed by the Government, as well as by Presidential Reform Agenda, the National Programme “The Strategy of Economic, Political and Cultural Development of Turkmenistan Until 2020” and other key national priorities.

In Malawi, approximately 49 percent of the household population is under age 15. However, when the age structure of Malawi is examined by wealth quintile, the wealthy and the very poor have quite different age structures. Among the households in the wealthiest quintile, only 43 percent of the population is under age 15, reflecting a reduction in fertility in recent years (below 4 children per woman).