. Author manuscript; available in PMC: 2015 Apr 2.

Published in final edited form as: N Engl J Med. 2014 Oct 2;371(14):1316–1323. doi: 10.1056/NEJMoa1400506

Table 2.

Pregnancy, Birth, and Abortion Rates among Girls and Women 15 to 19 Years of Age in the CHOICE Cohort as Compared with Those in the U.S. Population.^*

Outcome	U.S. Population, All Teens^*	U.S. Population, Sexually Experienced Teens^†	CHOICE Cohort^‡
	no. per 1000 teens		mean no. per 1000 teens (95% CI)
Pregnancy	57.4	158.5	34.0 (25.7–44.1)
Birth	34.4	94.0	19.4 (13.3–27.4)
Abortion	14.7	41.5	9.7 (5.6–15.8)

Data are U.S. rates for the year 2010.¹

^†

Data are U.S. rates for the year 2008.²⁰

^‡

Data are the mean annual rates for the years 2008 through 2013. CI denotes confidence interval.