Although repeat teen births have declined in recent years, almost 1 in 5 teen births is a repeat birth, according to a new report from the CDC. Evaluating government data, researchers found that more than 367,000 patients 15 to 19 gave birth in 2010, and almost 67,000 (18.3%) of those deliveries were repeat births. The authors point out that, in addition to limiting education and job opportunities, repeat teen pregnancies are more likely to result in premature and low birth weight infants. Repeat teen births were higher among American Indian/Alaska Natives (21.6%), Hispanics (20.9%) and non-Hispanic blacks (20.4%), and lower among non-Hispanic whites (14.8%). More than 9 in 10 of teen mothers who were sexually active in the postpartum period used some form of contraception, but only 22.4% used methods considered to be most effective.