Public Health Service Twente, Enschede, The Netherlands.
Department of Primary and Community Care, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands.
PLoS One. 2020 Oct 1;15(10):e0239750. doi: 10.1371/journal.pone.0239750. eCollection 2020.
Swingers, heterosexuals who, as couples, practice mate swapping or group sex with other couples or heterosexual singles, are at risk for sexually transmitted infections (STIs). Therefore, the aim of this study was to assess changes in sexual behaviour and STI testing behaviour, as well as predictors of STI testing.
Two cross-sectional studies were performed, using the same internet survey in 2011 and 2018. For trend analysis, sexual behaviour and STI testing behaviour were used. Socio-demographics, swinger characteristics, sexual behaviour, and psycho-social variables were used to assess predictors of STI testing in the past year, using multivariable regression analysis.
A total of 1173 participants completed the survey in 2011, and 1005 in 2018. Condom use decreased for vaginal (73% vs. 60%), oral (5% vs. 2%), and anal sex (85% vs. 75%). STI positivity was reported in 23% and 30% of the participants, respectively, although testing for STI was comparable between both years (~65%). The following predictors of STI testing were significant: being female (OR = 1.9, 95%CI: 1.2-2.9), having a high swinging frequency (>12 times a year, OR = 3.7, 95%CI: 1.9-7.3), swinging at home (OR = 1.6, 95%CI: 1.0-2.7), receiving a partner notification (OR = 1.7, 95%CI: 1.2-2.6), considering STI testing important (OR = 4.3, 95%CI: 2.2-8.5), experiencing no pressure from a partner to test (OR = 0.6, 95%CI: 0.3-0.9), partners test for STI regularly (OR = 10.0, 95%CI: 6.2-15.9), perceiving STI testing as an obligation (OR = 2.1, 95%CI: 1.3-3.5), experiencing no barriers such as being afraid of testing (OR = 1.9, 95%CI: 1.2-3.1), limited opening hours (OR = 1.6, 95%CI: 1.0-2.4), and forgetting to plan appointments (OR = 3.0, 95%CI: 2.0-4.6).
Swingers exhibit self-selection for STI testing based on their sexual behaviour. However, STI prevention efforts are still important considering the increasing numbers of reported STIs, the decreased use of condom use, and the one-third of swingers who were not tested in the previous year.
作为夫妇，交换伴侣或与其他夫妇或异性单身人士进行群体性行为的异性恋者，即 swingers，存在性传播感染（STI）的风险。因此，本研究旨在评估性行为和 STI 检测行为的变化，以及 STI 检测的预测因素。
2011 年和 2018 年使用相同的互联网调查进行了两项横断面研究。为了进行趋势分析，使用了性行为和 STI 检测行为。使用社会人口统计学、交换者特征、性行为和心理社会变量来评估过去一年中 STI 检测的预测因素，使用多变量回归分析。
2011 年共有 1173 名参与者完成了调查，2018 年有 1005 名参与者完成了调查。阴道交（73%对 60%）、口交（5%对 2%）和肛交（85%对 75%）时使用安全套的比例下降。分别有 23%和 30%的参与者报告了 STI 阳性，但两年间的 STI 检测率相当（~65%）。以下是 STI 检测的显著预测因素：女性（OR=1.9，95%CI：1.2-2.9）、高性交频率（>12 次/年，OR=3.7，95%CI：1.9-7.3）、在家性交（OR=1.6，95%CI：1.0-2.7）、收到伴侣通知（OR=1.7，95%CI：1.2-2.6）、认为 STI 检测很重要（OR=4.3，95%CI：2.2-8.5）、没有来自伴侣的检测压力（OR=0.6，95%CI：0.3-0.9）、伴侣定期检测 STI（OR=10.0，95%CI：6.2-15.9）、将 STI 检测视为义务（OR=2.1，95%CI：1.3-3.5）、没有检测恐惧等障碍（OR=1.9，95%CI：1.2-3.1）、检测时间有限（OR=1.6，95%CI：1.0-2.4）和忘记预约（OR=3.0，95%CI：2.0-4.6）。
交换者根据其性行为进行自我选择进行 STI 检测。然而，考虑到报告的 STI 数量不断增加、安全套使用减少以及三分之一的 swingers 在前一年未接受检测，性传播感染预防工作仍然很重要。
