Abstract 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.

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We aimed to study the demographic patterns of two contrasting communities, namely Bengali Hindu and Bihari Hindu groups, residing in adjacent clusters in the city of Kolkata, West Bengal. The former were the original inhabitants of Kolkata and the latter were a migrant group from the state of Bihar. We collected data from 164 ever-married females (Bengali [84] and Bihari [80]). Data on household information, demographic variables, and marital distance and preferences were collected using a well-tested schedule/questionnaire from ever-married females of both the groups. Some in-depth interviews were conducted on the participants to get information on the reasons for sex preference in childbirth, preference in selecting mates, determining the age at marriage, and so on. Results showed that both the groups differ with respect to sex ratio and child sex ratio, marital preference, marriage distance, and fertility. It appeared from the study that despite the physical proximity between these two groups, their demographic traits differed sharply. We concluded from this study that the differences in demographic traits between these two groups may be attributed to contrasting cultural attributes of these two communities.

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