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There is an extensive body of literature concerning modern contraceptive use among women in Uganda. A questionable aspect however is whether the impact of factors associated with modern contraceptive ...
基于1995-2012年的分省动态面板数据,通过改造KAYA恒等式,运用系统广义矩估计(SYS-GMM)和Driscoll-Kraay协方差矩阵估计等计量方法对老龄化、城镇化与碳排放之间的关系进行了考察。研究表明,老龄化和城镇化均与碳排放存在倒"U"型关系:在老龄化初期由于存量人口红利的存在碳排放会保持上升趋势,但是长期来看人口寿命延长导致的老龄化对碳排放会产生明显的抑制作用;城镇化起步和加速阶段...
CONTEXT: Publicly funded family planning agencies face significant challenges in delivering quality services to low- income women because of the higher costs of newer contraceptive methods, changes in...
Context: The teenage birthrate rose sharply in the late 1980s and early 1990s, and then declined in the 1990s. Attempts to explain these changes have failed to account for the changing environment in ...
Context:Both the demand for and the availability of infertility services in the United States increased during the 1980s and early 1990s. Understanding the factors that are related to service-seeking ...
Context: Studying how adolescent males view abortion and how their attitudes toward abortion have changed over time can improve our understanding of the sexual, contraceptive and abortion behavior of ...
Context: In every country, contraceptive behavior has important implications for fertility and the prevalence of sexually transmitted diseases (STDs). There has been relatively little attention to con...
Context: Although overall condom use has increased substantially over the past decade, information is needed on whether dual method use has also become more common. In addition, there is little inform...
Context: The incidence of unintended pregnancy has long been used as a primary indicator of the state of reproductive health. However, the definition—and therefore the measurement—of this indicator ha...
Context: The formulation of policies and development of programs regarding adolescent sexual and reproductive health requires up-to-date information on levels of and trends in teenage sexual activity....
Context: Half of all pregnancies in the United States are unintended. Of these, half occur to women who were practicing contraception in the month they conceived, and others occur when couples stop us...
Context: Unintended pregnancy remains a major public health concern in the United States. Information on pregnancy rates among contraceptive users is needed to guide medical professionals' recommendat...
Context: Sexually transmitted diseases (STDs) of bacterial origin such as gonorrhea and chlamydial infection can lead to pelvic inflammatory disease (PID) and infertility. Identifying behaviors and ch...
Context: Understanding whether and to what degree changes in young men's attitudes explain increases in condom use over time can be useful in developing more effective disease prevention strategies. ...
Context: In the 1980s, the number of abortion providers in the United States began to decline, and more recently, so has the number of abortions performed. Whether the decline in service providers, wh...

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