(December 2001) Sub-Saharan Africa has one of the world’s youngest populations. At the beginning of the 21st century, about one out of every four people in sub-Saharan Africa is 10 to 19 years old. This is the largest group of young people ever in the region to enter adulthood. To what extent are young people in the region prepared for adulthood? This chartbook examines factors that are important to a healthy transition, including education and exposure to information; sexual experience and marriage; HIV/AIDS; childbearing; contraception; and maternal health.