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 …

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 …

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: Pregnancies among contraceptive users account for nearly half of all unintended
pregnancies and are almost entirely due to inconsistent or incorrect contraceptive use …

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 …

CONTEXT: Knowing the extent to which contraceptive nonuse, incorrect or inconsistent use,
and method failure account for unintended pregnancies ending in abortion, as well as …

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 …

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

The Centers for Disease Control and Prevention's National Center for Health Statistics
(NCHS) has conducted the National Survey of Family Growth (NSFG) seven times since …

Context: While differences in levels of contraceptive use across socioeconomic subgroups of
women have narrowed greatly over time, large disparities remain in rates of unintended …