BACKGROUND: This study was conducted to assess risk factors for contraceptive nonuse
among a nationally representative sample of US women and explored the influence of future …

BACKGROUND: Women ages 35 years and older have the greatest proportion of
contraceptive nonuse and unintended pregnancies ending in abortion. STUDY DESIGN: We …

CONTEXT: Each year, nearly one in four US women at risk of unintended pregnancy
experience one or more months of contraceptive nonuse. Understanding what factors are …

Objective To describe characteristics of US contraceptive non-users to inform tailored
contraceptive access initiatives. Study design We used National Survey of Family Growth …

Objective This paper seeks to determine factors associated with nonuse of contraception by
women at risk of unintended pregnancy in the United States. This nonuse may be …

Context: Measures of contraceptive use at one point in time do not account for its changing
nature. A measure that addresses the pattern of method use over time may better predict the …

CONTEXT: Unintended pregnancies occur far too often in the United States, and half occur
when couples fail to practice contraception. Improved measures of the continuity of women's …

Background: Nearly half of pregnancies in the United States are unintended, a proportion
that has remained constant in the last decade. Half of unintended pregnancies occur among …

Objective The purpose of this study was to characterize age-group specific patterns in the
stability of contraceptive use and to evaluate whether factors that are associated with …

Background: Both unintended and adolescent childbearing disproportionately impact the
Hispanic population of the United States. Methods: We used the 2006–2010 National …