Department of Periodontology and Oral Medicine, School of Oral Health Sciences, Sefako Makgatho Health Sciences University, Pretoria, South Africa.
Africa Centre for Tobacco Industry Monitoring & Policy Research, Sefako Makgatho Health Sciences University, Pretoria, South Africa.
PLoS One. 2019 Mar 13;14(3):e0213729. doi: 10.1371/journal.pone.0213729. eCollection 2019.
Tobacco use and oral sex (OS) are important risk factors for oral and oropharyngeal Human papillomavirus (HPV) infection. Little is known about the prevalence of OS practice in South Africa. This study aimed to determine the prevalence of OS practice and tobacco use in a South African patient population. This cross-sectional study used a structured questionnaire to collect socio-demographic characteristics, tobacco use, betel nut use and OS practice data from consenting adults (≥18 years; n = 850). Oral sex practices were recorded for patients 18-45 years-old (n = 514). Data analysis included chi-square and multiple logistic regression analyses. Of the study population, 55.2% (n = 468) were female, 88% (n = 748) self-identified as black Africans and 45.1% (n = 383) were unemployed. Furthermore, 19.7% (n = 167), 6.4% (n = 54) and 2.1% (n = 18) were current smokers, snuff users and betel nut users, respectively. Out of the 514 who answered the questionnaire in relation to OS, 22.8% (n = 115) reported to practice it. Oral sex practice in the age group 18-45 years was most common among the self-identified white participants (41.9%); and among tobacco users than among non-tobacco users (30.9% vs. 20.5%; p = 0.022). A multivariable-adjusted regression model showed that white South Africans were more likely to use tobacco than black Africans (OR = 5.25; 95% CI = 2.21-12.47). The practice of OS was more likely among those 18-35 years-old (OR = 1.67; 95% CI = 1.01-2.74), but had no significant association with tobacco use (OR = 1.06; 95% CI = 0.62-1.83). The observed age and ethnic differences in both risk behaviours suggest a need for targeted population intervention in order to reduce the risk for oral HPV infection.
烟草使用和口交（OS）是口腔和口咽人乳头瘤病毒（HPV）感染的重要危险因素。南非对 OS 实践的流行情况知之甚少。本研究旨在确定南非患者人群中 OS 实践和烟草使用的流行情况。这项横断面研究使用结构化问卷收集了同意参加的成年人（≥18 岁；n=850）的社会人口统计学特征、烟草使用、槟榔使用和 OS 实践数据。对 18-45 岁的患者（n=514）记录了口交行为。数据分析包括卡方检验和多因素逻辑回归分析。研究人群中，55.2%（n=468）为女性，88%（n=748）自认为是非洲黑人，45.1%（n=383）失业。此外，19.7%（n=167）、6.4%（n=54）和 2.1%（n=18）分别为当前吸烟者、鼻烟使用者和槟榔使用者。在回答有关 OS 问卷的 514 人中，22.8%（n=115）报告有过这种行为。18-45 岁年龄组的口交行为在自我认定为白人的参与者中最为常见（41.9%）；在吸烟者中比在非吸烟者中更为常见（30.9%比 20.5%；p=0.022）。多变量调整回归模型显示，南非白人比黑人更有可能使用烟草（OR=5.25；95%CI=2.21-12.47）。18-35 岁的人更有可能进行 OS（OR=1.67；95%CI=1.01-2.74），但与烟草使用没有显著关联（OR=1.06；95%CI=0.62-1.83）。这两种风险行为在年龄和种族上的差异表明，需要对特定人群进行干预，以降低口腔 HPV 感染的风险。
