Cross-generational sexual relationships are a major route of transmitting HIV and STI between older and younger generations. However, previous research has focused mainly on the young women in these relationships. This study examined the characteristics of men engaging in non-marital sexual relationships with girls aged 15–19 in Nigeria. The data were drawn from the 2013 Nigeria Demographic and Health Survey, and the analysis was restricted to a sub-sample of 7557 men aged 30–49 who were sexually active in the 12 months prior to the survey. Data analysis was carried out using frequency distributions, chi-squared tests of association and binary logistic regression. It was found that 9.5% of men aged 30–49 reported engaging in cross-generational sexual relationships. Also, being older (OR = 0.35), married (OR = 0.37), having secondary or higher education (OR = 0.70; 0.59) and having sexual debut between ages 18 and 30 (OR = 0.73) were associated with a lower likelihood of having cross-generational sexual relationships. However, Muslim men (OR = 2.10), men from Igbo (OR = 1.90), Hausa/Fulani (OR = 8.47) and Northern and Southern minority tribes (OR = 4.73; 2.49), men living in rural areas (OR = 1.34), men who were over the age of 30 at sexual debut (OR = 2.67) and those with 2–4 and 5 or more lifetime sexual partners (OR = 1.43; 1.58) were significantly more likely to engage in cross-generational sexual relationships. Addressing the challenges of cross-generational sexual relationships can be an effective strategy to reduce the menace of HIV and STI transmission. Men who have low education, those aged 30–34 years, those who initiated sex at an older age, rural dwellers and those who have had several lifetime sexual partners need to be targeted while designing and implementing programmes and policies to reduce cross-generational sexual relationships in Nigeria. These interventions must also take into account the religious and cultural attitudes towards cross-generational sexual relationships, and further investigations should identify men’s motives for engaging in the practice.

中文翻译：

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在尼日利亚从事跨代性行为的男性特征

跨代性关系是在老一代和年轻一代之间传播 HIV 和 STI 的主要途径。然而，以前的研究主要集中在这些关系中的年轻女性身上。本研究调查了尼日利亚男性与 15-19 岁女孩发生非婚性关系的特征。数据来自 2013 年尼日利亚人口与健康调查，分析仅限于 7557 名年龄在 30-49 岁之间的男性子样本，这些男性在调查前 12 个月内有过性行为。使用频率分布、关联的卡方检验和二元逻辑回归进行数据分析。发现 9.5% 的 30-49 岁男性报告从事跨代性关系。此外，年龄较大（OR = 0.35），已婚（OR = 0.37），受过中等或高等教育（OR = 0.70；0.59）和在 18 至 30 岁之间首次发生性行为（OR = 0.73）与发生跨代性关系的可能性较低有关。然而，穆斯林男性 (OR = 2.10)、来自伊博族 (OR = 1.90)、豪萨/富拉尼 (OR = 8.47) 和北部和南部少数民族部落 (OR = 4.73; 2.49) 的男性，居住在农村地区的男性 (OR = 1.34) )，首次发生性行为时 30 岁以上的男性 (OR = 2.67) 和有 2-4 个和 5 个或更多终生性伴侣的男性 (OR = 1.43; 1.58) 更有可能从事跨代性关系. 解决跨代性关系的挑战可能是减少 HIV 和 STI 传播威胁的有效策略。受教育程度低的男性、30-34 岁的男性、性行为年龄较大的男性、在设计和实施旨在减少尼日利亚跨代性关系的计划和政策时，需要针对农村居民和拥有多个终生性伴侣的人。这些干预措施还必须考虑到对跨代性关系的宗教和文化态度，进一步的调查应该确定男性参与这种做法的动机。