May 2014 Report U.S. Teenage Pregnancies, Births and Abortions, 2010: National and State Trends by Age, Race and Ethnicity Kathryn Kost and Stanley Henshaw
April 2014 Research Article The sexual double standard and gender differences in attitudes toward casual sex among U.S. university students Jonathan Bearak Demographic Research
April 2014 News Release Growing Gap Between First Sex and First Birth Means Women Face Longer Period of Risk for Unintended Pregnancy
