Also referred to as adolescent pregnancy, teen pregnancy is generally defined as a teen woman conceiving before the age of 20. The bulk of research looking at rates of teen pregnancy examines information from the 20th century forward, and although cross-national comparisons remain difficult to make, national data are often separated between “developed” and “developing” countries. Additional variables included, if available, are race and ethnicity, educational level of the pregnant teen, economic level of the pregnant teen, her living situation (e.g., living with the child's biological father and/or her biological parent or parents), access to sex education and contraception, and access to healthcare and sources of nutrition. Two major concerns stand out in the research: teen pregnancy as a social problem and the health of ...