Kavanaugh Megan L, Pliskin Emma, Jerman Jenna
Guttmacher Institute in New York, New York, NY, United States.
Formerly at the Guttmacher Institute in New York, New York, NY, United States.
Contracept X. 2021 Feb 8;3:100060. doi: 10.1016/j.conx.2021.100060. eCollection 2021.
To identify prevalence of, characteristics associated with, and combinations of, use of more than one method of contraception at last intercourse among US women between 2008 and 2015.
We conducted bivariate and multivariable logistic regression analyses using data on concurrent contraceptive use from 2 nationally representative samples of women ages 15 to 44 who had used some form of contraception at last intercourse in the past 3 months in the 2006-2010 ( = 6601) and 2013-2017 ( = 5562) cycles of the National Survey of Family Growth.
Use of more than one method of contraception at last sex increased from 14% in 2008 to 18% in 2015 (<0.001), with increases in use documented across many population groups. Among multiple method users, the majority combined condoms with other methods (58%), while the rest combined other methods (42%). When compared to single method users, dual method users employing condoms are a more homogeneous group of individuals than are dual method users not employing condoms. As age increases, dual use with condoms decreases, but there is no similar linear relationship between age and dual method use without condoms.
A sizable proportion of US women use more than one contraceptive method during sex; current estimates of contraceptive use focused exclusively on single method use may underestimate the extent to which women are protected from unintended pregnancy. The needs and goals of individuals combining contraceptive methods in different ways may change over the life course as pregnancy desires and life circumstances change.
A sizable proportion of US women use more than one contraceptive method during sex; clinicians and health educators in nonclinical settings should assess and acknowledge these more complicated contraceptive strategies in order to help individuals achieve autonomy in method choice and meet their goals around pregnancy and sexually transmitted infection prevention.
确定2008年至2015年间美国女性在最后一次性交时使用不止一种避孕方法的流行情况、相关特征及组合情况。
我们使用来自全国代表性的两个样本数据进行双变量和多变量逻辑回归分析，这两个样本为年龄在15至44岁之间的女性，她们在2006 - 2010年（n = 6601）和2013 - 2017年（n = 5562）全国生育调查周期的过去3个月内最后一次性交时使用了某种避孕方法。
最后一次性交时使用不止一种避孕方法的比例从2008年的14%增至2015年的18%（P<0.001），多个群体的使用情况均有增加。在多种方法使用者中，大多数将避孕套与其他方法联合使用（58%），其余则联合其他方法（42%）。与单一方法使用者相比，使用避孕套的双重方法使用者比不使用避孕套的双重方法使用者群体更为同质。随着年龄增长，与避孕套的双重使用减少，但年龄与不使用避孕套的双重方法使用之间不存在类似的线性关系。
相当比例的美国女性在性行为中使用不止一种避孕方法；目前对避孕使用情况的估计仅关注单一方法使用，可能低估了女性免受意外怀孕的保护程度。随着怀孕意愿和生活状况的变化，以不同方式联合避孕方法的个体的需求和目标可能会在生命历程中发生改变。
相当比例的美国女性在性行为中使用不止一种避孕方法；非临床环境中的临床医生和健康教育工作者应评估并认可这些更为复杂的避孕策略，以帮助个体在方法选择上实现自主，并实现其围绕怀孕和预防性传播感染的目标。
