美国青少年避孕方式改变,怀孕率也降低

创作:尹小甜 审核:hx 01月11日
分析来自2007-2014年美国家庭成长调查项目中15-19岁女性性行为数据;
采用一种或多种避孕方法(78%-88%)、同时两种避孕方法(24%-33%)、节育器(1%-7%)、体外受精(15%-26%)及结合其他避孕方法(7%-17%)的比例呈上升趋势;
采用避孕药的比例先上升后下降;
女性平均性生活次数未见改变,但怀孕率和出生率分别年均下降7.7%和7.6%;
青少年怀孕率和出生率下降可能和长效可逆避孕措施和体外受精结合其他避孕方法的增加有关。
延伸阅读

Changing Patterns of Contraceptive Use and the Decline in Rates of Pregnancy and Birth Among U.S. Adolescents, 2007-2014

2007-2014年美国青少年避孕方式的改变与怀孕率及出生率下降的关系

2018-08-01, Article, 10.1016/j.jadohealth.2018.05.017more

Abstract:
PURPOSE: To investigate the influence of sexual activity and contraceptive use on the decline in adolescent birth rates and pregnancy rates since 2007.
METHODS: We estimated trends in pregnancy risk from 2007 to 2014 using national data on behaviors of women aged 15-19.
RESULTS: In 2007-2014, increases occurred in use of one or more contraceptive methods at last sex (78%-88%), dual method use (24%-33%), long-acting reversible contraception including intrauterine device and implant (1%-7%), withdrawal (15%-26%), and withdrawal in combination with other methods (7%-17%). Pill use rose and then fell over time. Level of sexual activity did not change over time. The decline in pregnancy risk among women aged 15-19 was entirely attributable to improvements in contraceptive use.
CONCLUSIONS: Improvements in contraceptive use-including increases in use of long-acting reversible contraception and withdrawal in combination with another method-appear to be driving recent declines in adolescent birth and pregnancy rates.

First Authors:
Laura D Lindberg

Correspondence Authors:
Laura D Lindberg

All Authors:
Laura D Lindberg,John S Santelli,Sheila Desai