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Publication - Dr Shailen Nandy

    Within-country migration and obesity dynamics

    Analysis of 94,783 women from the Peruvian demographic and health surveys 11 Medical and Health Sciences 1117 Public Health and Health Services 16 Studies in Human Society 1603 Demography

    Citation

    Najera, H, Nandy, S, Carrillo-Larco, RM & Miranda, JJ, 2019, ‘Within-country migration and obesity dynamics: Analysis of 94,783 women from the Peruvian demographic and health surveys 11 Medical and Health Sciences 1117 Public Health and Health Services 16 Studies in Human Society 1603 Demography’. BMC Public Health, vol 19.

    Abstract

    Background: Rural-to-urban migration is associated with increased obesity, yet it remains unknown whether this association exist, and to what extent, with other types of internal migration. Methods: We conducted a secondary analysis of the Peruvian Demographic and Health Surveys (2005 to 2012) on data collected from women aged 15-49 years. Participants were classified as rural stayers, urban stayers, rural-to-urban migrants, intra-rural migrants, intra-urban migrants, and urban-to-rural migrants. Marginal effects from a logit regression model were used to assess the probabilities of being and becoming obese given both the length of time in current place of residence and women's migration status. Results: Analysis of cross-sectional survey data generated between 2005 and 2012. Data from 94,783 participants was analyzed. Intra-urban migrants and rural-to-urban migrants had the highest rates of obesity (21% in 2012). A steady increase in obesity is observed across all migration statuses. Relative to rural non-migrants, participants exposed to urban environments had greater odds, two- to three-fold higher, of obesity. The intra-rural migrant group also shows higher odds relative to rural stayers (42% higher obesity odds). The length of exposure to urban settings shows a steady effect over time. Conclusion: Both exposure to urban environments and migration are associated with higher odds of obesity. Expanding the characterization of within-country migration dynamics provides a better insight into the relationship between duration of exposure to urban settings and obesity.

    Full details in the University publications repository