Birth rate
The region of Sub-Saharan Africa has the highest birth rate in the world. As of 2016, Niger, Mali, Uganda, Zambia, and Burundi have the highest birth rates in the world. This is part of the fertility-income paradox, as these countries are very poor, and it may seem counter-intuitive for families there to have so many children. The inverse relationship between income and fertility has been termed a "demographic-economic "paradox"" by the notion that greater means would enable the production of more offspring as suggested by the influential Thomas Malthus.
Prevalence of teenage pregnancy
The UK has one of the highest teenage birth rates in Europe with a rate of 26.4 teenage births per 1,000 women aged 15–19 in 2006, down from 27.9 births in 2001. The UK also has a higher rate of abortion than most European countries. Of young Britons reported engaging in sexual intercourse whilst in their teens, 80% said they did not use a form of contraception (Citation needed), although a half of those under 16, and one-third of those between 16 and 19, said they did not use a form of contraception during their first encounter (Citation needed). 10% of British teen mothers are married. Adolescent pregnancy is viewed as a matter of concern by both the British government and the British press.