The aim of the present study was to estimate the prevalence and examine the determinants of consanguineous marriage types in India. Data for 456,646 ever-married women aged 15–49 years were analysed from the National Family Health Survey (NFHS)-4 conducted in 2015–16. The overall prevalence of consanguineous marriage was 9.9%; the South region (23%) and North-East region (3.1%) showed the highest and lowest prevalences, respectively. Muslims had a higher prevalence (15%) than Hindus (9%). The prevalence of first cousin marriage (8.7%) was more than that of second cousin (0.7%) and of uncle–niece marriages (0.6%). Women living in urban areas and in nuclear families, having a higher level of education and belonging to affluent families were less likely to marry their cousins (p < 0.01). Women living in the South region of the country were more likely to marry their cousins, as well as uncles (p < 0.001). Close scrutiny of the trends in the results (odds ratios) revealed no clear relationship between socioeconomic condition and consanguineous marriage. The study results suggest that religion and north–south regional dichotomy in culture largely determine consanguineous marriage rather than socioeconomic condition in India.

中文翻译：

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印度近亲婚姻及其类型的流行率和决定因素：2015-2016 年全国家庭健康调查的证据

本研究的目的是估计印度近亲婚姻类型的流行率并检查其决定因素。从 2015-16 年进行的全国家庭健康调查 (NFHS)-4 中分析了 456,646 名 15-49 岁的已婚女性的数据。近亲结婚的总体流行率为9.9%；南部地区 (23%) 和东北地区 (3.1%) 的患病率分别最高和最低。穆斯林的患病率（15%）高于印度教徒（9%）。表亲结婚（8.7%）的患病率高于第二表亲（0.7%）和叔侄结婚（0.6%）。生活在城市地区和核心家庭、受教育程度较高且属于富裕家庭的女性与表亲结婚的可能性较小（p< 0.01)。居住在该国南部地区的女性更有可能嫁给表亲和叔叔（p< 0.001)。对结果趋势（优势比）的仔细审查表明，社会经济状况与近亲婚姻之间没有明确的关系。研究结果表明，宗教和文化中的南北地区二分法在很大程度上决定了近亲婚姻，而不是印度的社会经济状况。