Introduction

Sexual behavior information can provide context for understanding rates of sexually transmitted infections (STI) and inform potential impact of interventions.

Methods

We used 2013–2016 National Health and Nutrition Examination Survey (n = 4930) and 2011–2015 National Survey of Family Growth (n = 16,643) data from sexually experienced 20–44-year old US females and males to estimate the number of lifetime and past year partners and percent with a new past year partner overall and by marital status, in 5-year age groups. Group differences were qualitatively assessed.

Results

Estimates from both surveys were comparable. The median number of lifetime sex partners ranged from 4.2 to 5.2 across age groups among females and was higher among older (9.1) than younger (4.6) males, persons with a new past year partner than those without, and persons widowed/divorced/separated/never married than those married/living with partner. Percents with ≥ 2 past year partners and a new past year partner were highest in the youngest age group and lower with age. Percent with a new past year partner was 19–46 percentage points higher in persons widowed/divorced/separated/never married (range 21.7–56.4%) compared to persons married/living with partner (range 2.7–12.4%).

Conclusions

In the USA, there are differences in sexual behaviors by gender, age, and marital status. The percent of adults with a new sex partner is lower with increasing age; however, a portion of all subgroups reported having had a new sex partner in the past year indicating some adults remain at risk of acquiring an STI.

Policy Implications

These data can help inform policies for STI screening and other interventions.

中文翻译：

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美国成年人的性行为：新的性伴侣和终生性伴侣的数量，NHANES 2013–2016和NSFG 2011–2015

介绍

性行为信息可为了解性传播感染率提供背景，并告知干预措施的潜在影响。

方法

我们使用了2013-2016年美国国家健康和营养检查 问卷（n  = 4930）和2011-2015年美国家庭生长状况调查（n = 16,643）来自有性经验的20-44岁美国男女的数据来估计一生的数量5岁年龄段的总体和婚姻状况，以及过去一年的伴侣和新的过去一年伴侣的百分比。定性评估组差异。

结果

两次调查的估计值是可比的。在不同年龄段中，女性一生中性伴侣的中位数范围为4.2至5.2，其中年龄较大（9.1）的男性比年龄较小（4.6）的男性，拥有新的过去伴侣的人比没有伴侣的人和丧偶/离异/分居的人更高。 /从未结婚过，而不是与伴侣结婚/同居的人。在过去的年龄段中，具有≥2个过去一年的伴侣和一个新的过去一年的伴侣的百分比最高，而随着年龄的增长而降低。丧偶/离异/分居/从未结婚的人（与伴侣结婚或生活的人）（范围为2.7-12.4％）比过去一年有了新的伴侣的人的比例高19-46个百分点（范围为21.7-56.4％）。

结论

在美国，根据性别，年龄和婚姻状况，性行为存在差异。有新的性伴侣的成年人所占的百分比随着年龄的增长而降低；但是，在所有亚组中，有一部分报告说在过去一年中有了新的性伴侣，这表明一些成年人仍然有患上性传播感染的风险。

政策含义

这些数据可以帮助为性传播感染筛查和其他干预措施提供信息。